Catalogue

Expand all | Collapse all | Show hidden lines

  • Banner

ELRING 128.201 Seal Ring

128.201
£0.00
Tax included
Quantity
Out-of-Stock

  Security policy

(edit with the Customer Reassurance module)

  Delivery policy

(edit with the Customer Reassurance module)

  Return policy

(edit with the Customer Reassurance module)

VICTOR REINZ
407019700
Product Details
ELRING
128.201
New product

Data sheet

Shape
A-shape
Material
Copper
Inner diameter [mm]
22
Outer diameter [mm]
26
Thickness [mm]
1,5
New product
100 other products in the same category:
ELRING 246.760 Seal Ring Quick view

Reference: 246.760

Brand: ELRING

ELRING 246.760 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
DELCO REMY 1927848 Seal Ring Quick view

Reference: 1927848

Brand: DELCO REMY

DELCO REMY 1927848 Seal Ring

for OE number : .........,,.,....,, Weight [g] : 0

(0)

Price £0.00
More
Out-of-Stock
ELRING 253.309 Seal Ring Quick view

Reference: 253.309

Brand: ELRING

ELRING 253.309 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 830.887 Seal Ring Quick view

Reference: 830.887

Brand: ELRING

ELRING 830.887 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 505.740 Seal Ring Quick view

Reference: 505.740

Brand: ELRING

ELRING 505.740 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 925.970 Seal Ring Quick view

Reference: 925.970

Brand: ELRING

ELRING 925.970 Seal Ring

Shape : A-shape, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 691.640 Seal Ring Quick view

Reference: 691.640

Brand: ELRING

ELRING 691.640 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 906.630 Seal Ring Quick view

Reference: 906.630

Brand: ELRING

ELRING 906.630 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 911.230 Seal Ring Quick view

Reference: 911.230

Brand: ELRING

ELRING 911.230 Seal Ring

Colour : Purple, Shape : A-shape, Material : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 475.260 Seal Ring Quick view

Reference: 475.260

Brand: ELRING

ELRING 475.260 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 214.290 Seal Ring Quick view

Reference: 214.290

Brand: ELRING

ELRING 214.290 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 596.604 Seal Ring Quick view

Reference: 596.604

Brand: ELRING

ELRING 596.604 Seal Ring

Shape : A-shape, Material : VF (vulcanized ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 570.495 Seal Ring Quick view

Reference: 570.495

Brand: ELRING

ELRING 570.495 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 530.107 Seal Ring Quick view

Reference: 530.107

Brand: ELRING

ELRING 530.107 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 113.000 Seal Ring Quick view

Reference: 113.000

Brand: ELRING

ELRING 113.000 Seal Ring

Shape : A-shape, Material : Copper, Inner ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 694.711 Seal Ring Quick view

Reference: 694.711

Brand: ELRING

ELRING 694.711 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 887.220 Seal Ring Quick view

Reference: 887.220

Brand: ELRING

ELRING 887.220 Seal Ring

Shape : A-shape, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 598.630 Seal Ring Quick view

Reference: 598.630

Brand: ELRING

ELRING 598.630 Seal Ring

Shape : O-Ring, Material : EPDM (ethylene ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 693.201 Seal Ring Quick view

Reference: 693.201

Brand: ELRING

ELRING 693.201 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 366.230 Seal Ring Quick view

Reference: 366.230

Brand: ELRING

ELRING 366.230 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 562.882 Seal Ring Quick view

Reference: 562.882

Brand: ELRING

ELRING 562.882 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 044.369 Seal Ring Quick view

Reference: 044.369

Brand: ELRING

ELRING 044.369 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 354.080 Seal Ring Quick view

Reference: 354.080

Brand: ELRING

ELRING 354.080 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 225.666 Seal Ring Quick view

Reference: 225.666

Brand: ELRING

ELRING 225.666 Seal Ring

Material : MVQ (Silicone Elastomer), Dust ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 586.838 Seal Ring Quick view

Reference: 586.838

Brand: ELRING

ELRING 586.838 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 413.500 Seal Ring Quick view

Reference: 413.500

Brand: ELRING

ELRING 413.500 Seal Ring

Colour : Green, Shape : O-Ring, Material : FPM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 239.260 Seal Ring Quick view

Reference: 239.260

Brand: ELRING

ELRING 239.260 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 219.568 Seal Ring Quick view

Reference: 219.568

Brand: ELRING

ELRING 219.568 Seal Ring

Material : ACM (Polyacrylate), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 928.270 Seal Ring Quick view

Reference: 928.270

Brand: ELRING

ELRING 928.270 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 694.770 Seal Ring Quick view

Reference: 694.770

Brand: ELRING

ELRING 694.770 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 587.842 Seal Ring Quick view

Reference: 587.842

Brand: ELRING

ELRING 587.842 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 749.605 Seal Ring Quick view

Reference: 749.605

Brand: ELRING

ELRING 749.605 Seal Ring

Shape : O-Ring, Material : NBR (nitrile ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 446.602 Seal Ring Quick view

Reference: 446.602

Brand: ELRING

ELRING 446.602 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 534.680 Seal Ring Quick view

Reference: 534.680

Brand: ELRING

ELRING 534.680 Seal Ring

Material : ACM (Polyacrylate), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 042.391 Seal Ring Quick view

Reference: 042.391

Brand: ELRING

ELRING 042.391 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 227.630 Seal Ring Quick view

Reference: 227.630

Brand: ELRING

ELRING 227.630 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 118.001 Seal Ring Quick view

Reference: 118.001

Brand: ELRING

ELRING 118.001 Seal Ring

Shape : A-shape, Material : Copper, Inner ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 331.163 Seal Ring Quick view

Reference: 331.163

Brand: ELRING

ELRING 331.163 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 733.440 Seal Ring Quick view

Reference: 733.440

Brand: ELRING

ELRING 733.440 Seal Ring

Shape : O-Ring, Material : ACM (Polyacrylate), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 559.030 Seal Ring Quick view

Reference: 559.030

Brand: ELRING

ELRING 559.030 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 702.994 Seal Ring Quick view

Reference: 702.994

Brand: ELRING

ELRING 702.994 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 578.010 Seal Ring Quick view

Reference: 578.010

Brand: ELRING

ELRING 578.010 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
DELCO REMY 10487540 Seal Ring Quick view

Reference: 10487540

Brand: DELCO REMY

DELCO REMY 10487540 Seal Ring

for OE number : ...........,.,,..,

(0)

Price £0.00
More
Out-of-Stock
ELRING 762.024 Seal Ring Quick view

Reference: 762.024

Brand: ELRING

ELRING 762.024 Seal Ring

Shape : O-Ring, Material : MVQ (Silicone ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 010.901 Seal Ring Quick view

Reference: 010.901

Brand: ELRING

ELRING 010.901 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 373.490 Seal Ring Quick view

Reference: 373.490

Brand: ELRING

ELRING 373.490 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 870.320 Seal Ring Quick view

Reference: 870.320

Brand: ELRING

ELRING 870.320 Seal Ring

Material : ACM (Polyacrylate), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 165.990 Seal Ring Quick view

Reference: 165.990

Brand: ELRING

ELRING 165.990 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 135.110 Seal Ring Quick view

Reference: 135.110

Brand: ELRING

ELRING 135.110 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 091.901 Seal Ring Quick view

Reference: 091.901

Brand: ELRING

ELRING 091.901 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 294.060 Seal Ring Quick view

Reference: 294.060

Brand: ELRING

ELRING 294.060 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 741.299 Seal Ring Quick view

Reference: 741.299

Brand: ELRING

ELRING 741.299 Seal Ring

Shape : O-Ring, Material : MVQ (Silicone ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 325.562 Seal Ring Quick view

Reference: 325.562

Brand: ELRING

ELRING 325.562 Seal Ring

Material : ACM (Polyacrylate), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 345.351 Seal Ring Quick view

Reference: 345.351

Brand: ELRING

ELRING 345.351 Seal Ring

Shape : O-Ring, Material : MVQ (Silicone ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 003.770 Seal Ring Quick view

Reference: 003.770

Brand: ELRING

ELRING 003.770 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 505.090 Seal Ring Quick view

Reference: 505.090

Brand: ELRING

ELRING 505.090 Seal Ring

Fitting Position : Right, Material : ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 812.935 Seal Ring Quick view

Reference: 812.935

Brand: ELRING

ELRING 812.935 Seal Ring

Shape : C-Shape, Material : Copper, Inner ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 904.260 Seal Ring Quick view

Reference: 904.260

Brand: ELRING

ELRING 904.260 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 829.463 Seal Ring Quick view

Reference: 829.463

Brand: ELRING

ELRING 829.463 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 026.790 Seal Ring Quick view

Reference: 026.790

Brand: ELRING

ELRING 026.790 Seal Ring

Material : PTFE (polytetrafluoroethylene)/FPM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 762.830 Seal Ring Quick view

Reference: 762.830

Brand: ELRING

ELRING 762.830 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 906.700 Seal Ring Quick view

Reference: 906.700

Brand: ELRING

ELRING 906.700 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 278.000 Seal Ring Quick view

Reference: 278.000

Brand: ELRING

ELRING 278.000 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 152.630 Seal Ring Quick view

Reference: 152.630

Brand: ELRING

ELRING 152.630 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 196.180 Seal Ring Quick view

Reference: 196.180

Brand: ELRING

ELRING 196.180 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 993.440 Seal Ring Quick view

Reference: 993.440

Brand: ELRING

ELRING 993.440 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 136.480 Seal Ring Quick view

Reference: 136.480

Brand: ELRING

ELRING 136.480 Seal Ring

Shape : A-shape, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 453.920 Seal Ring Quick view

Reference: 453.920

Brand: ELRING

ELRING 453.920 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 586.781 Seal Ring Quick view

Reference: 586.781

Brand: ELRING

ELRING 586.781 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 353.110 Seal Ring Quick view

Reference: 353.110

Brand: ELRING

ELRING 353.110 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 813.478 Seal Ring Quick view

Reference: 813.478

Brand: ELRING

ELRING 813.478 Seal Ring

Shape : O-Ring, Material : EPDM (ethylene ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 284.662 Seal Ring Quick view

Reference: 284.662

Brand: ELRING

ELRING 284.662 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 479.004 Seal Ring Quick view

Reference: 479.004

Brand: ELRING

ELRING 479.004 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 157.200 Seal Ring Quick view

Reference: 157.200

Brand: ELRING

ELRING 157.200 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 287.202 Seal Ring Quick view

Reference: 287.202

Brand: ELRING

ELRING 287.202 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 232.300 Seal Ring Quick view

Reference: 232.300

Brand: ELRING

ELRING 232.300 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 232.807 Seal Ring Quick view

Reference: 232.807

Brand: ELRING

ELRING 232.807 Seal Ring

Shape : A-shape, Material : Aluminium, Inner ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 485.890 Seal Ring Quick view

Reference: 485.890

Brand: ELRING

ELRING 485.890 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 594.210 Seal Ring Quick view

Reference: 594.210

Brand: ELRING

ELRING 594.210 Seal Ring

Material : ACM (Polyacrylate), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 742.767 Seal Ring Quick view

Reference: 742.767

Brand: ELRING

ELRING 742.767 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 318.360 Seal Ring Quick view

Reference: 318.360

Brand: ELRING

ELRING 318.360 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 394.009 Seal Ring Quick view

Reference: 394.009

Brand: ELRING

ELRING 394.009 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 042.935 Seal Ring Quick view

Reference: 042.935

Brand: ELRING

ELRING 042.935 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 250.760 Seal Ring Quick view

Reference: 250.760

Brand: ELRING

ELRING 250.760 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 041.866 Seal Ring Quick view

Reference: 041.866

Brand: ELRING

ELRING 041.866 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 308.919 Seal Ring Quick view

Reference: 308.919

Brand: ELRING

ELRING 308.919 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 508.462 Seal Ring Quick view

Reference: 508.462

Brand: ELRING

ELRING 508.462 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 919.888 Seal Ring Quick view

Reference: 919.888

Brand: ELRING

ELRING 919.888 Seal Ring

Material : FPM (fluoride rubber), Height [mm] ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 434.860 Seal Ring Quick view

Reference: 434.860

Brand: ELRING

ELRING 434.860 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 504.483 Seal Ring Quick view

Reference: 504.483

Brand: ELRING

ELRING 504.483 Seal Ring

Material : FPM (fluoride rubber)/ACM ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 431.050 Seal Ring Quick view

Reference: 431.050

Brand: ELRING

ELRING 431.050 Seal Ring

Material : ACM (Polyacrylate), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 705.070 Seal Ring Quick view

Reference: 705.070

Brand: ELRING

ELRING 705.070 Seal Ring

Shape : C-Shape, Material : Steel, Inner ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 009.360 Seal Ring Quick view

Reference: 009.360

Brand: ELRING

ELRING 009.360 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 293.400 Seal Ring Quick view

Reference: 293.400

Brand: ELRING

ELRING 293.400 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 348.376 Seal Ring Quick view

Reference: 348.376

Brand: ELRING

ELRING 348.376 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 922.269 Seal Ring Quick view

Reference: 922.269

Brand: ELRING

ELRING 922.269 Seal Ring

Shape : Asymmetrical, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 522.864 Seal Ring Quick view

Reference: 522.864

Brand: ELRING

ELRING 522.864 Seal Ring

Material : NBR (nitrile butadiene rubber), ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 943.040 Seal Ring Quick view

Reference: 943.040

Brand: ELRING

ELRING 943.040 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 002.820 Seal Ring Quick view

Reference: 002.820

Brand: ELRING

ELRING 002.820 Seal Ring

Shape : O-Ring, Material : FPM (fluoride ...

(0)

Price £0.00
More
Out-of-Stock
ELRING 853.500 Seal Ring Quick view

Reference: 853.500

Brand: ELRING

ELRING 853.500 Seal Ring

Material : FPM (fluoride rubber), Dust Cover : ...

(0)

Price £0.00
More
Out-of-Stock

Follow us on Facebook

Facebook