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Technical Data Sheet

MIL-R-8791/1-12 3 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MIL-R-8791/1-12 3: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include cut_type: DIAGONAL OVERALL, material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-PERIPHERAL RETAINER, peripheral_diameter: 1.376 INCHES MINIMUM AND 1.382 INCHES MAXIMUM IN, center_hole_diameter: 1.206 INCHES MINIMUM AND 1.208 INCHES MAXIMUM IN, criticality_code_justification: ZZZY. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-285-1782, 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-8791/1-12 3
NSN: 5330-01-285-1782
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
cut_typeDIAGONAL OVERALL
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL RETAINER
peripheral_diameter1.376 INCHES MINIMUM AND 1.382 INCHES MAXIMUM IN
center_hole_diameter1.206 INCHES MINIMUM AND 1.208 INCHES MAXIMUM IN
criticality_code_justificationZZZY
cross_section_outside_diameter0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
material_document_and_classificationSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN5330-01-285-1782
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-R-8791/1-12 3 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CUT TYPE: DIAGONAL OVERALL
•
PERIPHERAL DIAMETER: 1.376 INCHES MINIMUM AND 1.382 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.206 INCHES MINIMUM AND 1.208 INCHES MAXIMUM IN
•
CROSS SECTION OUTSIDE DIAMETER: 0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
JOINT TYPE: SCARF-PERIPHERAL RETAINER
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
CUT TYPEDIAGONAL OVERALL
PERIPHERAL DIAMETER1.376 INCHES MINIMUM AND 1.382 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.206 INCHES MINIMUM AND 1.208 INCHES MAXIMUM IN
CROSS SECTION OUTSIDE DIAMETER0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPESCARF-PERIPHERAL RETAINER
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
SUBSTITUTES & CROSS-REFERENCES 4
MS28774-123CPSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
M8791/1-123Reference document
Same NSN cross-reference
Reference document — Secondary reference
V3D10076 PIECE 19CPReference document
Same NSN cross-reference
Reference document — Secondary reference
MS28774-123Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MIL-R-8791/1-12 3?
MIL-R-8791/1-12 3 is a RETAINER,PACKING.
What parts can replace MIL-R-8791/1-12 3?
There are 4 known substitutes for MIL-R-8791/1-12 3: MS28774-123CP, M8791/1-123, V3D10076 PIECE 19CP and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-R-8791/1-12 3?
MIL-R-8791/1-12 3 is cataloged in the U.S. Government catalog under NSN 5330-01-285-1782. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.