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Technical Data Sheet
AS8791 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, special_features: SCAEF CUT 000 CUT AT ANGLE 22-19 DEGREES;WIDTH 0.118IN IN, peripheral_diameter: 1.861 INCHES NOMINAL IN, center_hole_diameter: 1.625 INCHES NOMINAL IN, cross-sectional_height: 0.060 INCHES NOMINAL IN, end_item_identification: LIFT CHECK VALVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-007-0070, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AS8791
NSN: 5330-00-007-0070
FSC: 5330
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
special_featuresSCAEF CUT 000 CUT AT ANGLE 22-19 DEGREES;WIDTH 0.118IN IN
peripheral_diameter1.861 INCHES NOMINAL IN
center_hole_diameter1.625 INCHES NOMINAL IN
cross-sectional_height0.060 INCHES NOMINAL IN
end_item_identificationLIFT CHECK VALVE
material_document_and_classificationMIL-R-8791,-8791/1-223 MIL SPEC SINGLE MATERIAL RESPONSE CASE
NSN5330-00-007-0070
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS8791 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL HEIGHT: 0.106 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
PERIPHERAL DIAMETER: 13.468 INCHES MINIMUM AND 13.480 INCHES MAXIMUM IN
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
CENTER HOLE DIAMETER: 12.998 INCHES MINIMUM AND 13.006 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL HEIGHT0.106 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
PERIPHERAL DIAMETER13.468 INCHES MINIMUM AND 13.480 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
CENTER HOLE DIAMETER12.998 INCHES MINIMUM AND 13.006 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
S30989-455Interchangeable
Same NIIN cross-reference
interchangeable
MS27595Interchangeable
Same NIIN cross-reference
interchangeable
AS8791-455Interchangeable
Same NIIN cross-reference
interchangeable
MS27595-455Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS8791?
AS8791 is a RETAINER,PACKING.
What parts can replace AS8791?
There are 4 known substitutes for AS8791: S30989-455, MS27595, AS8791-455 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS8791?
AS8791 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-007-0070. This indicates validated use in U.S. government and defense supply chains.
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