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Imperial Oil Seals
Bearings Oil Seals & O-rings Oil Seals
We offer a comprehensive range of imperial nitrile covered rotary shaft oil seals suitable for a variety of industrial applications. With single lip seals available in R21 and R23 types, and sizes from 1/4" up to 8 1/4" inside diameter, we have the oil seals you need for bearing and shaft protection. All seals feature nitrile rubber construction for durability, with press fit installation. Browse our catalog of over 600 oil seals by inside diameter, outside diameter, width, or type to find the perfect fit. Trust us as your supplier for high quality imperial oil seals.
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Ball Bearings (Loose Steel Balls)
O-ring Cord
Imperial Ball Bearings
SKF Ball Bearings
Inside Diameter
184.15mm = 7.25inch
184.15mm = 7.25inch
Material
Nitrile
Nitrile
Outside Diameter
215.9mm = 8.5inch
215.9mm = 8.5inch
Type
R21
R21
Width
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Inside Diameter
184.15mm = 7.25inch
184.15mm = 7.25inch
Material
Nitrile
Nitrile
Outside Diameter
228.6mm = 9inch
228.6mm = 9inch
Type
R21
R21
Width
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Inside Diameter
190.5mm = 7.5inch
190.5mm = 7.5inch
Material
Nitrile
Nitrile
Outside Diameter
228.6mm = 9inch
228.6mm = 9inch
Type
R23
R23
Width
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Inside Diameter
206.25mm = 8.12inch
206.25mm = 8.12inch
Material
Nitrile
Nitrile
Outside Diameter
244.35mm = 9.62inch
244.35mm = 9.62inch
Type
R21
R21
Width
14.22mm = 0.56inch
14.22mm = 0.56inch
Inside Diameter
209.55mm = 8.25inch
209.55mm = 8.25inch
Material
Nitrile
Nitrile
Outside Diameter
247.65mm = 9.75inch
247.65mm = 9.75inch
Type
R21
R21
Width
14.22mm = 0.56inch
14.22mm = 0.56inch
Inside Diameter
28.45mm = 1.12inch
28.45mm = 1.12inch
Material
Nitrile
Nitrile
Outside Diameter
53.85mm = 2.12inch
53.85mm = 2.12inch
Type
R21
R21
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
57.15mm = 2.25(2.1/4)inch
57.15mm = 2.25(2.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
41.15mm = 1.62inch
41.15mm = 1.62inch
Material
Nitrile
Nitrile
Outside Diameter
53.85mm = 2.12inch
53.85mm = 2.12inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
57.15mm = 2.25(2.1/4)inch
57.15mm = 2.25(2.1/4)inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
15.75mm = 0.62inch
15.75mm = 0.62inch
Material
Nitrile
Nitrile
Outside Diameter
25.4mm = 1inch
25.4mm = 1inch
Type
R21
R21
Width
4.57mm = 0.18inch
4.57mm = 0.18inch
Inside Diameter
34.8mm = 1.37inch
34.8mm = 1.37inch
Material
Nitrile
Nitrile
Outside Diameter
44.45mm = 1.75(1.3/4)inch
44.45mm = 1.75(1.3/4)inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
25.4mm = 1inch
25.4mm = 1inch
Material
Nitrile
Nitrile
Outside Diameter
50.8mm = 2inch
50.8mm = 2inch
Type
R23
R23
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
38.1mm = 1.5(1.1/2)inch
38.1mm = 1.5(1.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
22.1mm = 0.87inch
22.1mm = 0.87inch
Material
Nitrile
Nitrile
Outside Diameter
34.8mm = 1.37inch
34.8mm = 1.37inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
39.62mm = 1.56inch
39.62mm = 1.56inch
Material
Nitrile
Nitrile
Outside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
25.4mm = 1inch
25.4mm = 1inch
Material
Nitrile
Nitrile
Outside Diameter
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Type
R21
R21
Width
3.05mm = 0.12inch
3.05mm = 0.12inch
Inside Diameter
25.4mm = 1inch
25.4mm = 1inch
Material
Nitrile
Nitrile
Outside Diameter
41.15mm = 1.62inch
41.15mm = 1.62inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
47.5mm = 1.87inch
47.5mm = 1.87inch
Material
Nitrile
Nitrile
Outside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
41.15mm = 1.62inch
41.15mm = 1.62inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
29.97mm = 1.18inch
29.97mm = 1.18inch
Material
Nitrile
Nitrile
Outside Diameter
44.45mm = 1.75(1.3/4)inch
44.45mm = 1.75(1.3/4)inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
49.02mm = 1.93inch
49.02mm = 1.93inch
Material
Nitrile
Nitrile
Outside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Type
R23
R23
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
25.4mm = 1inch
25.4mm = 1inch
Material
Nitrile
Nitrile
Outside Diameter
50.8mm = 2inch
50.8mm = 2inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
29.97mm = 1.18inch
29.97mm = 1.18inch
Material
Nitrile
Nitrile
Outside Diameter
52.32mm = 2.06inch
52.32mm = 2.06inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
95.25mm = 3.75(3.3/4)inch
95.25mm = 3.75(3.3/4)inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
34.8mm = 1.37inch
34.8mm = 1.37inch
Material
Nitrile
Nitrile
Outside Diameter
60.2mm = 2.37inch
60.2mm = 2.37inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
22.1mm = 0.87inch
22.1mm = 0.87inch
Material
Nitrile
Nitrile
Outside Diameter
41.15mm = 1.62inch
41.15mm = 1.62inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
44.45mm = 1.75(1.3/4)inch
44.45mm = 1.75(1.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
60.2mm = 2.37inch
60.2mm = 2.37inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
25.4mm = 1inch
25.4mm = 1inch
Material
Nitrile
Nitrile
Outside Diameter
50.8mm = 2inch
50.8mm = 2inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
39.62mm = 1.56inch
39.62mm = 1.56inch
Material
Nitrile
Nitrile
Outside Diameter
53.85mm = 2.12inch
53.85mm = 2.12inch
Type
R23
R23
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
44.45mm = 1.75(1.3/4)inch
44.45mm = 1.75(1.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
22.1mm = 0.87inch
22.1mm = 0.87inch
Material
Nitrile
Nitrile
Outside Diameter
38.1mm = 1.5(1.1/2)inch
38.1mm = 1.5(1.1/2)inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
50.8mm = 2inch
50.8mm = 2inch
Material
Nitrile
Nitrile
Outside Diameter
82.55mm = 3.25(3.1/4)inch
82.55mm = 3.25(3.1/4)inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
44.45mm = 1.75(1.3/4)inch
44.45mm = 1.75(1.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
66.55mm = 2.62inch
66.55mm = 2.62inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
50.8mm = 2inch
50.8mm = 2inch
Material
Nitrile
Nitrile
Outside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Type
R23
R23
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
152.4mm = 6inch
152.4mm = 6inch
Material
Nitrile
Nitrile
Outside Diameter
177.8mm = 7inch
177.8mm = 7inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
25.4mm = 1inch
25.4mm = 1inch
Material
Nitrile
Nitrile
Outside Diameter
47.5mm = 1.87inch
47.5mm = 1.87inch
Type
R21
R21
Width
10.92mm = 0.43inch
10.92mm = 0.43inch
Inside Diameter
44.45mm = 1.75(1.3/4)inch
44.45mm = 1.75(1.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
66.55mm = 2.62inch
66.55mm = 2.62inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
95.25mm = 3.75(3.3/4)inch
95.25mm = 3.75(3.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
114.3mm = 4.5(4.1/2)inch
114.3mm = 4.5(4.1/2)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
28.45mm = 1.12inch
28.45mm = 1.12inch
Material
Nitrile
Nitrile
Outside Diameter
45.21mm = 1.78inch
45.21mm = 1.78inch
Type
R23
R23
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
84.07mm = 3.31inch
84.07mm = 3.31inch
Material
Nitrile
Nitrile
Outside Diameter
110.998mm = 4.37inch
110.998mm = 4.37inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
90.42mm = 3.56inch
90.42mm = 3.56inch
Type
R21
R21
Width
10.92mm = 0.43inch
10.92mm = 0.43inch
Inside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
15.75mm = 0.62inch
15.75mm = 0.62inch
Material
Nitrile
Nitrile
Outside Diameter
38.1mm = 1.5(1.1/2)inch
38.1mm = 1.5(1.1/2)inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
120.65mm = 4.75(4.3/4)inch
120.65mm = 4.75(4.3/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Type
R23
R23
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
25.4mm = 1inch
25.4mm = 1inch
Type
R21
R21
Width
3.05mm = 0.12inch
3.05mm = 0.12inch