Bearing seal form into dust cover and plastic material seal. There are various types of seal. Because of different seal material, bearing to adapt condition will also change.

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Name Code	Characteristics	Using Temperature
NBR Acrylonitrile-butadiene rubber	Oil resistance,heat resistance,resistance to wear	-40~120
FKM Fluorine rubber	Hear resistant,acid and alkali resistant and chemicals, oil resistance preferred	-20~200
VMQ Silicone rubber	Heat and cold resistance, good compression deformation is small, but the mechanical strength is not good	-60~230
ACM Polypropylene acid ester rubber	Heat resistance, oil resistance better than NBR, but resistance to water and alkali is not strong	-20~150

Radial Clearance:

Bore				C2		C0		C3		C4		C5
Over		Including		C2		C0		C3		C4		C5
mm	Inch	mm	Inch	Min	Max	Min	Max	Min	Max	Min	Max	Min.	Max
2.5	0.0984	10	0.3937	0	7	2	13	8	23	14	29	20	37
10	0.3937	18	0.7087	0	9	3	18	11	25	18	33	25	45
18	0.7887	24	0.9449	0	10	5	20	13	28	20	36	28	48
24	0.9449	30	1.1811	1	11	5	20	13	28	23	41	30	53
30	1.1811	40	1.5748	1	11	6	20	15	33	28	46	40	64
40	1.5748	50	1.9685	1	11	6	23	18	36	30	51	45	73
50	1.9685	65	2.5591	1	15	8	28	23	43	38	61	55	90

Black Color Automobiles Non Standard Bearing 6203 2rs Bearing With Plastic Part

Deep Groove Bearing

Automobile Ball Bearings

Pump Motor Bearings

Electric Motor Bearings

Textile Bearing

Air Conditioner Bearings

Washing Machine Bearings

Vacuum Cleaner Bearings

Motorcycle Ball Bearings

Agricultural Machinery Bearing

Single Row Ball Bearing

Thin Section Bearings

Non Standard Bearing

Black Color Automobiles Non Standard Bearing 6203 2rs Bearing With Plastic Part

ge40 bearing

202krr3 bearing

b2012 bearing