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SEA High Pressure Flanges

Four-hole flange connections according to ISO 6162-1 and ISO 6162-2 (SAE J518) are proven, leak-free ­connections, ­especially suited for ­larger connections. An O-ring performs the sealing function at the flange. The ­holding ­forces are borne by the bolts and split flange halves. The O-ring sealing ­effect is achieved by squeezing the ­O-ring ­between the 4-hole flange with O-ring groove and the counter flange connection. The force required for squeezing the seal is applied by tightening the four bolts.

Technical Information

SAE-Adapter Version / SAE Flange Version


Flange-Standards

Following standards are considered:

SAE Flange:

  • SAE J518 Code 61 and SAE J518 Code 62
  • ISO 6162-1 and ISO 6162-2

Flange-Pressure Ratings

The appropriate maximum recommended working pressure is indicated for each item. Please observe the pressure rates before using a part. All pressure indications are based on an operating temperature between -20° C and +100° C (resp. ambient temperature between -40° C and +120° C). Outside of this temperature range the physical properties of the material used is affected and the maximum recommended working pressure is reduced.

The indicated working pressures refer only to the flange itself. For the tubes, fittings and connections used, the pressure directives of the respective manufacturers must also taken into account.

Strength reductions at elevated temperatures 

according to DIN EN 10088-3: 2014. We cannot accept guarantee for the use in extreme temperatures. Maximum working pressure highly depends on the individual use and fluid.

Flange-Bolts

The screws and spring lock washer of our flanges supplied by Schwer Fittings are optionally available in the following materials:

SAE Flanges according to SAE J518 Code 61 and Code 62 (ISO 6162-1 and -2):

Metric hexagon socket head cap screws

  • according to DIN 912 (ISO 4762)
  • Stainless Steel AISI 316L / A4-80

Hexagon socket head cap screws with UNC thread

  • according to ASA B 18.3
  • Stainless Steel AISI 316L / A4-80

Spring lock washers

  • according to DIN 7980 (or DIN 127 Form B)
  • Stainless Steel AISI 316L

Flange-Seals

Flanges conforming to the standards SAE J518 (ISO 6162) shown in this catalog are sealed with an O-ring according to SAE J515. The seals of our flanges supplied by Schwer Fittings are optionally available in the following materials:

SAE Flanges according to SAE J518 Code 61 and Code 62 (ISO 6162-1 and -2):

  • NBR 90 Shore hardness (standard): Temperature range: -30° C ... +100° C
  • FKM / FPM 85-90 Shore hardness (on request): Temperature range: -20° C ... +200° C
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high pressure flanges