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PartsTable / COMPONENT / MIL-R-8791/1-133
MIL-R-8791/1-133 ✓ 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 MIL-R-8791/1-133 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-077-2612, 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-8791/1-133
NSN: 5330-01-077-2612
FSC: 5330
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-R-8791/1-133
NSN5330-01-077-2612
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-R-8791/1-133 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
•
PERIPHERAL DIAMETER: 2.004 INCHES MINIMUM AND 2.008 INCHES MAXIMUM IN
•
DEPARTURE FROM CITED DOCUMENT: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
CUT TYPE: DIAGONAL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: PLASTIC TETRAFLUOROETHYLENE OVERALL
•
CENTER HOLE DIAMETER: 1.833 INCHES MINIMUM AND 1.835 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER2.004 INCHES MINIMUM AND 2.008 INCHES MAXIMUM IN
DEPARTURE FROM CITED DOCUMENTCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
CRITICALITY CODE JUSTIFICATIONZZZW
CUT TYPEDIAGONAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC TETRAFLUOROETHYLENE OVERALL
CENTER HOLE DIAMETER1.833 INCHES MINIMUM AND 1.835 INCHES MAXIMUM IN
JOINT QUANTITY1
CROSS-SECTIONAL HEIGHT0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
V3E10005PC41Interchangeable
interchangeable cross-reference
interchangeable
911-170 ITEM 69Interchangeable
interchangeable cross-reference
interchangeable
V3E10103 ITEM 48Interchangeable
interchangeable cross-reference
interchangeable
M8791/1-133Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-8791/1-131Interchangeable
interchangeable cross-reference
interchangeable
M8791/1-131CPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-R-8791/1-133?
MIL-R-8791/1-133 is a MIL-R-8791/1-133.
What parts can replace MIL-R-8791/1-133?
There are 13 known substitutes for MIL-R-8791/1-133: V3E10005PC41, 911-170 ITEM 69, V3E10103 ITEM 48 and 10 more. Substitute compatibility should be verified for your specific system.
Is MIL-R-8791/1-133 still available?
MIL-R-8791/1-133 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026