Banner

ELRING 277.223 Seal Ring

Reference 277.223

Brand ELRING

£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)

BMW: 11192004
BMW: 31211118478
BMW: 31211119139
BMW: 31211119200
BMW: 31211125912
CORTECO: 19015050
CORTECO: 19015050B
FEDERAL MOGUL: 224820
GOETZE: 5030591500
GOETZE: 5031920900
PAYEN: NJ066
TOYOTA: 9031148122

Manufacturer	Model	Engine	Engine info	Years	Note
BMW	5 (E12)	530 i	2986 ccm, 131 kw, 178 hp	1974 - 1978	Construction year from : 06/1978, Fitting Position : Front Axle
BMW	5 (E12)	M535 i	3453 ccm, 160 kw, 218 hp	1980 - 1981	Fitting Position : Rear Axle
BMW	5 (E28)	533 i	3210 ccm, 135 kw, 184 hp	1982 - 1984	Fitting Position : Front Axle
BMW	6 (E24)	628 CSi	2788 ccm, 135 kw, 184 hp	1979 - 1987	Fitting Position : Rear Axle
BMW	6 (E24)	630 CS	2986 ccm, 136 kw, 185 hp	1976 - 1979	Construction year from : 06/1978, Fitting Position : Front Axle
BMW	6 (E24)	630 CS	2986 ccm, 135 kw, 184 hp	1976 - 1979	Construction year from : 06/1978, Fitting Position : Front Axle
BMW	6 (E24)	630 CSi	2986 ccm, 131 kw, 178 hp	1976 - 1978	Construction year from : 06/1978, Fitting Position : Front Axle
BMW	6 (E24)	633 CSi	3210 ccm, 147 kw, 200 hp	1975 - 1981	Construction year from : 06/1978, Fitting Position : Front Axle
BMW	6 (E24)	633 CSi	3210 ccm, 145 kw, 197 hp	1978 - 1984	Fitting Position : Front Axle
BMW	6 (E24)	633 CSi	3210 ccm, 135 kw, 184 hp	1981 - 1984	Fitting Position : Front Axle
BMW	6 (E24)	633 CSi	3210 ccm, 132 kw, 179 hp	1977 - 1981	Construction year from : 06/1978, Fitting Position : Front Axle
BMW	6 (E24)	635 CSi	3453 ccm, 160 kw, 218 hp	1978 - 1982	Fitting Position : Front Axle
BMW	6 (E24)	635 CSi	3430 ccm, 155 kw, 211 hp	1987 - 1989	Fitting Position : Front Axle
BMW	6 (E24)	635 CSi	3430 ccm, 136 kw, 185 hp	1984 - 1986	Fitting Position : Front Axle
BMW	6 (E24)	635 CSi	3430 ccm, 141 kw, 192 hp	1977 - 1989	Fitting Position : Front Axle
BMW	6 (E24)	635 CSi	3430 ccm, 160 kw, 218 hp	1982 - 1987	Fitting Position : Front Axle
BMW	6 (E24)	635 CSi	3430 ccm, 162 kw, 220 hp	1987 - 1989	Fitting Position : Front Axle
BMW	7 (E23)	728	2788 ccm, 125 kw, 170 hp	1977 - 1979	Fitting Position : Front Axle
BMW	7 (E23)	728 i	2788 ccm, 135 kw, 184 hp	1977 - 1986	Fitting Position : Front Axle
BMW	7 (E23)	730	2986 ccm, 135 kw, 184 hp	1977 - 1979	Fitting Position : Front Axle
BMW	7 (E23)	733 i	3210 ccm, 135 kw, 184 hp	1981 - 1984	Fitting Position : Front Axle
BMW	7 (E23)	735 i	3430 ccm, 136 kw, 185 hp	1984 - 1986	Fitting Position : Front Axle
BMW	7 (E23)	735 i	3430 ccm, 160 kw, 218 hp	1982 - 1986	Fitting Position : Front Axle
BMW	7 (E23)	735 i	3430 ccm, 141 kw, 192 hp	1985 - 1986	Fitting Position : Front Axle
BMW	7 (E23)	745 i	3210 ccm, 185 kw, 252 hp	1980 - 1983	Fitting Position : Front Axle
BMW	7 (E23)	745 i	3430 ccm, 185 kw, 252 hp	1983 - 1986	Fitting Position : Front Axle
CHEVROLET	CHEVY Estate	1.6	1598 ccm, 74 kw, 101 hp	2002 - 2006	Fitting Position : Front Axle
CHEVROLET	CHEVY Pickup	1.6	1598 ccm, 74 kw, 101 hp	2002 - 2006	Fitting Position : Front Axle
CHEVROLET	CHEVY Saloon	1.6	1598 ccm, 74 kw, 101 hp	2002 -	Fitting Position : Front Axle

Product Details

Brand ELRING

Reference 277.223

Condition New product

Data sheet

Material: NBR (nitrile butadiene rubber)
Dust Cover: with dust lip
Height [mm]: 7
Inner diameter [mm]: 48
Outer diameter [mm]: 62
Radial Shaft Seal Design: BS

Condition New product

100 other products in the same category:

Quick view

Reference: 908.140

Brand: ELRING

ELRING 908.140 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 282.200

Brand: ELRING

ELRING 282.200 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 567.787

Brand: ELRING

ELRING 567.787 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 121.509

Brand: ELRING

ELRING 121.509 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 447.610

Brand: ELRING

ELRING 447.610 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 261.090

Brand: ELRING

ELRING 261.090 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 069.590

Brand: ELRING

ELRING 069.590 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 588.016

Brand: ELRING

ELRING 588.016 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 1984527

Brand: DELCO REMY

DELCO REMY 1984527 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 754.669

Brand: ELRING

ELRING 754.669 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 467.860

Brand: ELRING

ELRING 467.860 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 220.450

Brand: ELRING

ELRING 220.450 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 203.157

Brand: ELRING

ELRING 203.157 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 166.180

Brand: ELRING

ELRING 166.180 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 903.070

Brand: ELRING

ELRING 903.070 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 439.600

Brand: ELRING

ELRING 439.600 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 355.630

Brand: ELRING

ELRING 355.630 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 128.201

Brand: ELRING

ELRING 128.201 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 492.060

Brand: ELRING

ELRING 492.060 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 131.860

Brand: ELRING

ELRING 131.860 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 084.610

Brand: ELRING

ELRING 084.610 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 010.197

Brand: ELRING

ELRING 010.197 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 348.856

Brand: ELRING

ELRING 348.856 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 441.170

Brand: ELRING

ELRING 441.170 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 834.416

Brand: ELRING

ELRING 834.416 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 097.530

Brand: ELRING

ELRING 097.530 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 508.942

Brand: ELRING

ELRING 508.942 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 039.926

Brand: ELRING

ELRING 039.926 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 173.890

Brand: ELRING

ELRING 173.890 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 598.760

Brand: ELRING

ELRING 598.760 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 092.614

Brand: ELRING

ELRING 092.614 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 1941041

Brand: DELCO REMY

DELCO REMY 1941041 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 810.580

Brand: ELRING

ELRING 810.580 Seal Ring

Material : FPM (fluoro rubber)/ NBR ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 803.881

Brand: ELRING

ELRING 803.881 Seal Ring

for OE number : 51.96501-0493, Colour : Black, ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 233.530

Brand: ELRING

ELRING 233.530 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 848.350

Brand: ELRING

ELRING 848.350 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 503.754

Brand: ELRING

ELRING 503.754 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 524.973

Brand: ELRING

ELRING 524.973 Seal Ring

Material : FPM (fluoride rubber), Version : ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 030.864

Brand: ELRING

ELRING 030.864 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 560.309

Brand: ELRING

ELRING 560.309 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 545.750

Brand: ELRING

ELRING 545.750 Seal Ring

Shape : A-shape, Material : NBR (nitrile ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 570.495

Brand: ELRING

ELRING 570.495 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 518.361

Brand: ELRING

ELRING 518.361 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 747.408

Brand: ELRING

ELRING 747.408 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 394.110

Brand: ELRING

ELRING 394.110 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 504.581

Brand: ELRING

ELRING 504.581 Seal Ring

Fitting Position : Left, Material : FPM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 151.510

Brand: ELRING

ELRING 151.510 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 1891143

Brand: DELCO REMY

DELCO REMY 1891143 Seal Ring

Weight [g] : 5, Component Number : 1891143

(0)

£0.00

Out-of-Stock

Quick view

Reference: 594.210

Brand: ELRING

ELRING 594.210 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 766.853

Brand: ELRING

ELRING 766.853 Seal Ring

Supplementary Article/Info 2 : with mounting ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 277.142

Brand: ELRING

ELRING 277.142 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 181.201

Brand: ELRING

ELRING 181.201 Seal Ring

Material : Rubber with textile reinforcement, ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 346.640

Brand: ELRING

ELRING 346.640 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 038.385

Brand: ELRING

ELRING 038.385 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 846.160

Brand: ELRING

ELRING 846.160 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 751.610

Brand: ELRING

ELRING 751.610 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 038.075

Brand: ELRING

ELRING 038.075 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 587.605

Brand: ELRING

ELRING 587.605 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 042.617

Brand: ELRING

ELRING 042.617 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 528.404

Brand: ELRING

ELRING 528.404 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 434.550

Brand: ELRING

ELRING 434.550 Seal Ring

Material : PTFE (polytetrafluoroethylene)/FPM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 535.250

Brand: ELRING

ELRING 535.250 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 821.390

Brand: ELRING

ELRING 821.390 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 074.870

Brand: ELRING

ELRING 074.870 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 104.108

Brand: ELRING

ELRING 104.108 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 225.347

Brand: ELRING

ELRING 225.347 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 921.874

Brand: ELRING

ELRING 921.874 Seal Ring

Material : PU (Polyurethane), Height [mm] : ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 375.560

Brand: ELRING

ELRING 375.560 Seal Ring

Supplementary Article/Info 2 : with mounting ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 152.230

Brand: ELRING

ELRING 152.230 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 541.070

Brand: ELRING

ELRING 541.070 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 583.050

Brand: ELRING

ELRING 583.050 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 1974629

Brand: DELCO REMY

DELCO REMY 1974629 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 235.407

Brand: ELRING

ELRING 235.407 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 717.720

Brand: ELRING

ELRING 717.720 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 222.830

Brand: ELRING

ELRING 222.830 Seal Ring

Fitting Position : OUTLET, Material : FPM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 393.950

Brand: ELRING

ELRING 393.950 Seal Ring

Shape : A-shape, Material : NBR (nitrile ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 964.880

Brand: ELRING

ELRING 964.880 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 521.470

Brand: ELRING

ELRING 521.470 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 332.480

Brand: ELRING

ELRING 332.480 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 353.780

Brand: ELRING

ELRING 353.780 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 939.710

Brand: ELRING

ELRING 939.710 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 818.399

Brand: ELRING

ELRING 818.399 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 495.600

Brand: ELRING

ELRING 495.600 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 754.455

Brand: ELRING

ELRING 754.455 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 511.930

Brand: ELRING

ELRING 511.930 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 822.760

Brand: ELRING

ELRING 822.760 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 104.290

Brand: ELRING

ELRING 104.290 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 242.650

Brand: ELRING

ELRING 242.650 Seal Ring

Material : PTFE (polytetrafluoroethylene)/ACM ...

(0)

£0.00

Out-of-Stock

Quick view

Reference: 198.440

Brand: ELRING

ELRING 198.440 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 322.415

Brand: ELRING

ELRING 322.415 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 009.076

Brand: ELRING

ELRING 009.076 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 239.260

Brand: ELRING

ELRING 239.260 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 584.971

Brand: ELRING

ELRING 584.971 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 206.806

Brand: ELRING

ELRING 206.806 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 228.480

Brand: ELRING

ELRING 228.480 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 331.198

Brand: ELRING

ELRING 331.198 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 905.910

Brand: ELRING

ELRING 905.910 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 902.100

Brand: ELRING

ELRING 902.100 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 042.676

Brand: ELRING

ELRING 042.676 Seal Ring

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

(0)

£0.00

Out-of-Stock

Quick view

Reference: 949.740

Brand: ELRING

ELRING 949.740 Seal Ring

Shape : O-Ring, Material : HNBR (hydrogenated ...

(0)

£0.00

Out-of-Stock

Follow us on Facebook

Facebook