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PartsTable / COMPONENT / M8791/1-226
M8791/1-226 ✓ 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 M8791/1-226 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-328-1995, 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
M8791/1-226
NSN: 5330-01-328-1995
FSC: 5330
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
Part NumberM8791/1-226
NSN5330-01-328-1995
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M8791/1-226 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
•
CENTER HOLE DIAMETER: 2.021 INCHES MINIMUM AND 2.258 INCHES MAXIMUM IN
•
CUT TYPE: DIAGONAL OVERALL
•
DEPARTURE FROM CITED DOCUMENT: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
PERIPHERAL DIAMETER: 2.257 INCHES MINIMUM AND 2.263 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
CROSS-SECTIONAL HEIGHT: 0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CENTER HOLE DIAMETER2.021 INCHES MINIMUM AND 2.258 INCHES MAXIMUM IN
CUT TYPEDIAGONAL OVERALL
DEPARTURE FROM CITED DOCUMENTCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
PERIPHERAL DIAMETER2.257 INCHES MINIMUM AND 2.263 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
CROSS-SECTIONAL HEIGHT0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
MS28774Interchangeable
interchangeable cross-reference
interchangeable
FJEK51-4X57-4X1-3Interchangeable
interchangeable cross-reference
interchangeable
MS28774-226Interchangeable
interchangeable cross-reference
interchangeable
845-2181262 PC 12Interchangeable
interchangeable cross-reference
interchangeable
2620-932X1PC12,1INInterchangeable
interchangeable cross-reference
interchangeable
MS28774-226CPInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M8791/1-226?
M8791/1-226 is a M8791/1-226.
What parts can replace M8791/1-226?
There are 9 known substitutes for M8791/1-226: MS28774, FJEK51-4X57-4X1-3, MS28774-226 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M8791/1-226?
M8791/1-226 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-328-1995. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026