Flange Gaskets

Most common materials are neoprene(black rubber), SBR(red rubber), compressed non-asbestos, teflon, fluorogreen, and flexible graphite. The normal thickness is 1/16" or 1/8".

Design types are ring face and full face. Raised face flanges use ring face gaskets. Flat face flanges use full face gaskets.

Pressure classes are 150 psi and 300 psi, but higher pressures are also available.

Sizes range from 1/2" to 30' inside diameter.

Service requirements, temperature and pressure and bolt torque are factors involved in selecting the type of gasket and the material.

Service requirements include chemicals, acids, voc and water. Oxygen service gaskets are now available in the UFC Fluorogreen material. Same day service on quotes and parts.

Flange Details Information

FLANGE DETAILS 150 lbs.

Nom. Pipe
Size
O.D. of Flange
Thick
Dia.
Bolt
Circle
Hole
Dia.
No.
of
Bolts
Bolt Size
2.00
6.00
0.62
4.75
0.75
4
.625 X 2.25
3.00
7.50
0.75
6.00
0.75
4
.625 X 2.5
4.00
9.00
0.94
7.50
0.75
8
.625 X 3
5.00
10.00
0.94
8.50
0.88
8
.75 X 3
6.00
11.00
1.00
9.50
0.88
8
.75 X 3.5
8.00
13.50
1.12
11.75
0.88
8
.75 X 3.5
10.00
16.00
1.19
14.25
1.00
12
.875 X 4
12.00
19.00
1.25
17.00
1.00
12
.875 X 4
14.00
21.00
1.38
18.75
1.12
12
1 X 4.5
16.00
23.50
1.44
21.25
1.12
16
1 X 4.5
18.00
25.00
1.56
22.75
1.25
16
1.125 X 5
20.00
27.50
1.69
25.00
1.25
20
1.125 X 5
24.00
32.00
1.88
29.50
1.37
20
1.125 X 5.5

 

FLANGE DETAILS 300 lbs.

Nom.
Pipe
Size
O.D. of
Flange
Thick
Dia.
Bolt
Circle
Hole
Dia.
No.
of
Bolts
Bolt Size
0.50
3.75
0.56
2.62
0.62
4
.5 X 2.25
0.75
4.62
0.62
3.25
0.75
4
.625 X 2.5
1.00
4.88
0.69
3.50
0.75
4
.625 X 2.75
1.25
5.25
0.75
3.88
0.75
4
.625 X 2.75
1.50
6.12
0.81
4.50
0.88
4
.75 X 3
2.00
6.50
0.88
5.00
0.75
8
.625 X 3
2.50
7.50
1.00
5.88
0.88
8
.75 X 3.5
3.00
8.25
1.12
6.62
0.88
8
.75 X 3.75
3.50
9.00
1.19
7.25
0.88
8
.75 X 3.75
4.00
10.00
1.25
7.88
0.88
8
.75 X 4
5.00
11.00
1.38
9.25
0.88
8
.75 X 4.25
6.00
12.50
1.44
10.62
0.88
12
.75 X 4.25
8.00
15.00
1.62
13.00
1.00
12
.875 X 4.75
10.00
17.50
1.88
15.25
1.12
16
1 X 5.5
12.00
20.50
2.00
17.75
1.25
16
1.125 X 6
14.00
23.00
2.12
20.25
1.25
20
1.125 X 6.25
16.00
25.50
2.25
22.25
1.38
20
1.25 X 6.5
18.00
28.00
2.38
24.75
1.38
24
1.25 X 6.75
20.00
30.50
2.50
27.00
1.38
24
1.25 X 7.25
24.00
36.00
2.75
32.00
1.62
24
1.5 X 8

 

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