Short Description

Model No.: 316L-Octagonal-Ring-Joint-Gasket-Type-R57-12"-900LBS

China Octagonal Ring Joint Gasket Manufacturer www.steeljrv.com supplies ASME B16.20 316L Octagonal Ring Joint Gasket Type R57, 12″, 900LBS.

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Key Specifications / Features

Type: Octogonal Ring Joint Gasket
Size: 12″ (DN300)
Material: 316L
Type: RTJ Gasket
Standard: ASME B16.20
Pressure Class: 900LBS

Chemical Composition and Mechanical Property For 316L

Steel Grade

Chemical Composition

Mechanical Performance

C(Max)

Si(Max)

Mn(Max)

P(Max)

S(Max)

Ni

Cr

Mo

N

Tensile Strength
(Min)

Yield Strength
(Min)

Mpa

Mpa

316L

0.03

0.75

2.00

0.045

0.03

10.0–14.0

16.0–18.0

2.00–3.00

0.1

485

170

2018112215666105456 - ASME B16.20 316L Octagonal Ring Joint Gasket Type R57 12" 900LBS
Dimensions & Tolerances
Type R Octagonal Ring Joint Gaskets ASME B16.20 to be used with RTJ flanges ASME B16.5 series 
R
NO
Dia
P
Width
A
Height Oct
C
Oct
R1
NPS
CL
Oval
B
Oct
H
R 50 269.88 15.88 22.4 20.6 10.49 1.5 8
1500
R 51 279.4 22.23 28.7 26.9 14.81 1.5 8
2500
R 52 304.8 7.95 14.2 12.7 5.23 1.5 10
150
R 53 323.85 11.13 17.5 16 7.75 1.5 10
300 900
R 54 323.85 15.88 22.4 20.6 10.49 1.5 10
1500
R 55 342.9 28.58 36.6 35.1 19.81 2.3 10
2500
R 56 381 7.95 14.2 12.7 5.23 1.5 12
150
R 57 381 11.13 17.5 16 7.75 1.5 12
300 900
R 58 381 22.23 28.7 26.9 14.81 1.5 12
1500
R 59 396.88 7.95 14.2 12.7 5.23 1.5 14
150


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