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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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O-ring Cord
Imperial Ball Bearings
SKF Ball Bearings
Inside Diameter
203.2mm = 8inch
203.2mm = 8inch
Material
Nitrile
Nitrile
Outside Diameter
241.3mm = 9.5inch
241.3mm = 9.5inch
Type
R23
R23
Width
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Inside Diameter
7.87mm = 0.31inch
7.87mm = 0.31inch
Material
Nitrile
Nitrile
Outside Diameter
17.27mm = 0.68inch
17.27mm = 0.68inch
Type
R21
R21
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
17.27mm = 0.68inch
17.27mm = 0.68inch
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
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
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
22.1mm = 0.87inch
22.1mm = 0.87inch
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
31.75mm = 1.25(1.1/4)inch
31.75mm = 1.25(1.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
50.8mm = 2inch
50.8mm = 2inch
Type
R21
R21
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
36.32mm = 1.43inch
36.32mm = 1.43inch
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
49.02mm = 1.93inch
49.02mm = 1.93inch
Material
Nitrile
Nitrile
Outside Diameter
65.02mm = 2.56inch
65.02mm = 2.56inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
45.97mm = 1.81inch
45.97mm = 1.81inch
Material
Nitrile
Nitrile
Outside Diameter
76.2mm = 3inch
76.2mm = 3inch
Type
R21
R21
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
63.5mm = 2.5(2.1/2)inch
63.5mm = 2.5(2.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
89.91mm = 3.54inch
89.91mm = 3.54inch
Type
R23
R23
Width
10.92mm = 0.43inch
10.92mm = 0.43inch
Inside Diameter
76.2mm = 3inch
76.2mm = 3inch
Material
Nitrile
Nitrile
Outside Diameter
95.25mm = 3.75(3.3/4)inch
95.25mm = 3.75(3.3/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
104.65mm = 4.12inch
104.65mm = 4.12inch
Type
R21
R21
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
82.55mm = 3.25(3.1/4)inch
82.55mm = 3.25(3.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
117.35mm = 4.62inch
117.35mm = 4.62inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
91.95mm = 3.62inch
91.95mm = 3.62inch
Material
Nitrile
Nitrile
Outside Diameter
117.35mm = 4.62inch
117.35mm = 4.62inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
101.6mm = 4inch
101.6mm = 4inch
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
98.3mm = 3.87inch
98.3mm = 3.87inch
Material
Nitrile
Nitrile
Outside Diameter
127mm = 5inch
127mm = 5inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
110.998mm = 4.37inch
110.998mm = 4.37inch
Material
Nitrile
Nitrile
Outside Diameter
136.4mm = 5.37inch
136.4mm = 5.37inch
Type
R21
R21
Width
10.92mm = 0.43inch
10.92mm = 0.43inch
Inside Diameter
53.85mm = 2.12inch
53.85mm = 2.12inch
Material
Nitrile
Nitrile
Outside Diameter
66.55mm = 2.62inch
66.55mm = 2.62inch
Type
R21
R21
Width
4.57mm = 0.18inch
4.57mm = 0.18inch
Inside Diameter
50.8mm = 2inch
50.8mm = 2inch
Material
Nitrile
Nitrile
Outside Diameter
72.9mm = 2.87inch
72.9mm = 2.87inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
61.72mm = 2.43inch
61.72mm = 2.43inch
Material
Nitrile
Nitrile
Outside Diameter
82.55mm = 3.25(3.1/4)inch
82.55mm = 3.25(3.1/4)inch
Type
R23
R23
Width
10.92mm = 0.43inch
10.92mm = 0.43inch
Inside Diameter
60.2mm = 2.37inch
60.2mm = 2.37inch
Material
Nitrile
Nitrile
Outside Diameter
95.25mm = 3.75(3.3/4)inch
95.25mm = 3.75(3.3/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
66.55mm = 2.62inch
66.55mm = 2.62inch
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
15.75mm = 0.62inch
15.75mm = 0.62inch
Inside Diameter
76.2mm = 3inch
76.2mm = 3inch
Material
Nitrile
Nitrile
Outside Diameter
101.6mm = 4inch
101.6mm = 4inch
Type
R23
R23
Width
10.92mm = 0.43inch
10.92mm = 0.43inch
Inside Diameter
76.2mm = 3inch
76.2mm = 3inch
Material
Nitrile
Nitrile
Outside Diameter
104.65mm = 4.12inch
104.65mm = 4.12inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
79.25mm = 3.12inch
79.25mm = 3.12inch
Material
Nitrile
Nitrile
Outside Diameter
104.65mm = 4.12inch
104.65mm = 4.12inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
76.2mm = 3inch
76.2mm = 3inch
Material
Nitrile
Nitrile
Outside Diameter
114.3mm = 4.5(4.1/2)inch
114.3mm = 4.5(4.1/2)inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)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
15.75mm = 0.62inch
15.75mm = 0.62inch
Inside Diameter
95.25mm = 3.75(3.3/4)inch
95.25mm = 3.75(3.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
127mm = 5inch
127mm = 5inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
106.17mm = 4.18inch
106.17mm = 4.18inch
Material
Nitrile
Nitrile
Outside Diameter
133.35mm = 5.25(5.1/4)inch
133.35mm = 5.25(5.1/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
107.95mm = 4.25(4.1/4)inch
107.95mm = 4.25(4.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
139.7mm = 5.5(5.1/2)inch
139.7mm = 5.5(5.1/2)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
101.6mm = 4inch
101.6mm = 4inch
Material
Nitrile
Nitrile
Outside Diameter
146.05mm = 5.75(5.3/4)inch
146.05mm = 5.75(5.3/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
114.3mm = 4.5(4.1/2)inch
114.3mm = 4.5(4.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
146.05mm = 5.75(5.3/4)inch
146.05mm = 5.75(5.3/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
107.95mm = 4.25(4.1/4)inch
107.95mm = 4.25(4.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
152.4mm = 6inch
152.4mm = 6inch
Type
R21
R21
Width
14.22mm = 0.56inch
14.22mm = 0.56inch
Inside Diameter
107.95mm = 4.25(4.1/4)inch
107.95mm = 4.25(4.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
152.4mm = 6inch
152.4mm = 6inch
Type
R23
R23
Width
14.22mm = 0.56inch
14.22mm = 0.56inch
Inside Diameter
114.3mm = 4.5(4.1/2)inch
114.3mm = 4.5(4.1/2)inch
Material
Nitrile
Nitrile
Outside Diameter
152.4mm = 6inch
152.4mm = 6inch
Type
R23
R23
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
142.75mm = 5.62inch
142.75mm = 5.62inch
Material
Nitrile
Nitrile
Outside Diameter
161.8mm = 6.37inch
161.8mm = 6.37inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
146.05mm = 5.75(5.3/4)inch
146.05mm = 5.75(5.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
171.45mm = 6.75(6.3/4)inch
171.45mm = 6.75(6.3/4)inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
158.75mm = 6.25(6.1/4)inch
158.75mm = 6.25(6.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
177.8mm = 7inch
177.8mm = 7inch
Type
R23
R23
Width
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
158.75mm = 6.25(6.1/4)inch
158.75mm = 6.25(6.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
182.37mm = 7.18inch
182.37mm = 7.18inch
Type
R23
R23
Width
15.75mm = 0.62inch
15.75mm = 0.62inch
Inside Diameter
29.97mm = 1.18inch
29.97mm = 1.18inch
Material
Nitrile
Nitrile
Outside Diameter
19.05mm = 0.75(3/4)inch
19.05mm = 0.75(3/4)inch
Type
R21
R21
Width
6.35mm = 0.25(1/4)inch
6.35mm = 0.25(1/4)inch
Inside Diameter
36.32mm = 1.43inch
36.32mm = 1.43inch
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
47.5mm = 1.87inch
47.5mm = 1.87inch
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
47.5mm = 1.87inch
47.5mm = 1.87inch
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
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch
Inside Diameter
69.85mm = 2.75(2.3/4)inch
69.85mm = 2.75(2.3/4)inch
Material
Nitrile
Nitrile
Outside Diameter
89.91mm = 3.54inch
89.91mm = 3.54inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)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
R21
R21
Width
7.87mm = 0.31inch
7.87mm = 0.31inch
Inside Diameter
74.42mm = 2.93inch
74.42mm = 2.93inch
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
9.4mm = 0.37inch
9.4mm = 0.37inch
Inside Diameter
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)inch
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
79.25mm = 3.12inch
79.25mm = 3.12inch
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
88.9mm = 3.5(3.1/2)inch
88.9mm = 3.5(3.1/2)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
82.55mm = 3.25(3.1/4)inch
82.55mm = 3.25(3.1/4)inch
Material
Nitrile
Nitrile
Outside Diameter
117.35mm = 4.62inch
117.35mm = 4.62inch
Type
R21
R21
Width
12.7mm = 0.5(1/2)inch
12.7mm = 0.5(1/2)inch