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GMW14727

Rubber Sealings for Refrigerant Applications

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Organization: GMW
Publication Date: 1 October 2019
Status: active
Page Count: 8
scope:

This standard covers the materials and performance requirements of Ethylene Propylene Diene Monomer (EPDM) and Hydrogenated Nitrile Butadiene Rubber (HNBR) O-rings and slim line seal washers used for sealing in Air Conditioning (A/C) systems with liquid and gaseous refrigerant. Rubber material is for use with refrigerants R134a and or R1234yf in combination with the compressor oil used in respective application.

• R134a (GM Drawing/Part Number 9985751 or equivalent).

•¬†R1234yf (GM Drawing/Part Number 9986319 or equivalent).

•¬†Polyalkylene Glycol (PAG) compressor oil (GM Drawing/Part Number 9986181 or equivalent).

• Polyolester (POE) compressor oil (GM Drawing/Part Number US 88862657 or equivalent and Canada Drawing/Part Number 88862658 or equivalent).

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Material Description

Materials covered by this standard are divided into three (3) types;

Type A:

EPDM, only for use with PAG oils, color code violet.

Type B:

Drawing defined (e.g., using SAE J200 or ASTM D2000 line callout).

Type C:

HNBR.

Symbols.

Not applicable.

Applicability.

O-rings and slim line seal washers used in refrigerant systems.

Remarks.

PAG and POE compressor oil formulations are unique to each A/C compressor manufacturer. In order to evaluate the entire spectrum of compressor oil formulations and refrigerants (R134a and R1234yf) used in GM vehicles, the A/C sealing washer supplier shall perform the material compatibility tests with the compressor oil formulations and refrigerant type confirmed by the responsible Global Thermal Bill of Materials (BOM) Family Owner (BFO).

Document History

May 1, 2021
Rubber Sealings for Refrigerant Applications
This standard covers the materials and performance requirements of Ethylene Propylene Diene Monomer (EPDM) and Hydrogenated Nitrile Butadiene Rubber (HNBR) O-rings and slim line seal washers used for...
GMW14727
October 1, 2019
Rubber Sealings for Refrigerant Applications
This standard covers the materials and performance requirements of Ethylene Propylene Diene Monomer (EPDM) and Hydrogenated Nitrile Butadiene Rubber (HNBR) O-rings and slim line seal washers used for...
June 1, 2014
Rubber Sealings for Refrigerant Applications
This standard covers the materials and performance requirements of Ethylene Propylene Diene Monomer (EPDM) and Hydrogenated Nitrile Butadiene Rubber (HNBR) O-rings and slim line seal washers used for...
June 1, 2009
EPDM O-Rings for Refrigerant Applications
This specification covers the materials and performance of Ethylene Propylene Diene Terpolymer (EPDM) o-rings used for sealing refrigerant systems. Material Description. Materials covered by this...
November 1, 2006
EPDM O-Rings for Refrigerant Applications
This specification covers the materials and performance of EPDM o-rings used for sealing refrigerant systems.

References

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