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Technical Data Sheet

MIL-R-8791/1-139 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MIL-R-8791/1-139: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-PERIPHERAL BOTH ENDS CUT, peripheral_diameter: 2.362 INCHES NOMINAL IN, center_hole_diameter: 2.189 INCHES MINIMUM AND 2.191 INCHES MAXIMUM IN, cross-sectional_height: 0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN, cross-sectional_shape_style: SQUARE/RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-351-7124, 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
MIL-R-8791/1-139
NSN: 5330-01-351-7124
FSC: 5330 — Packing and Gasket Materials
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL BOTH ENDS CUT
peripheral_diameter2.362 INCHES NOMINAL IN
center_hole_diameter2.189 INCHES MINIMUM AND 2.191 INCHES MAXIMUM IN
cross-sectional_height0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
material_document_and_classificationAS8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-351-7124
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-R-8791/1-139 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 HEIGHT: 0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AS8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
PERIPHERAL DIAMETER: 2.362 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 2.189 INCHES MINIMUM AND 2.191 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
JOINT TYPE: SCARF-PERIPHERAL BOTH ENDS CUT
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAS8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER2.362 INCHES NOMINAL IN
CENTER HOLE DIAMETER2.189 INCHES MINIMUM AND 2.191 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPESCARF-PERIPHERAL BOTH ENDS CUT
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 4
M8791/1-139Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS8791Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS8791/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS8791/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MIL-R-8791/1-139?
MIL-R-8791/1-139 is a RETAINER,PACKING.
What parts can replace MIL-R-8791/1-139?
There are 4 known substitutes for MIL-R-8791/1-139: M8791/1-139, AS8791, AS8791/1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-R-8791/1-139?
MIL-R-8791/1-139 is cataloged in the U.S. Government catalog under NSN 5330-01-351-7124. This indicates validated use in U.S. government and defense supply chains.
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