PartsTable
Technical Data Sheet

M8791/1-215 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

M8791/1-215: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-PERIPHERAL OVERALL, peripheral_diameter: 1.177 INCHES MINIMUM AND 1.181 INCHES MAXIMUM IN, center_hole_diameter: 1.059 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN, fsc_application_data: (78062)21780-400 SUBPLATE ASSEMBLY, cross-sectional_height: 0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-478-8437, 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
M8791/1-215
NSN: 5330-01-478-8437
FSC: 5330 — Packing and Gasket Materials
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL OVERALL
peripheral_diameter1.177 INCHES MINIMUM AND 1.181 INCHES MAXIMUM IN
center_hole_diameter1.059 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN
fsc_application_data(78062)21780-400 SUBPLATE ASSEMBLY
cross-sectional_height0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
specification/standard_data81349MIL-R-8791 REV D /CANCELED/ GOVERNMENT SPECIFICATION
material_document_and_classificationAS8791/1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-478-8437
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M8791/1-215 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
•
FSC APPLICATION DATA: (78062)21780-400 SUBPLATE ASSEMBLY
•
CROSS-SECTIONAL HEIGHT: 0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AS8791/1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
SPECIFICATION/STANDARD DATA: 81349MIL-R-8791 REV D /CANCELED/ GOVERNMENT SPECIFICATION
•
PERIPHERAL DIAMETER: 1.177 INCHES MINIMUM AND 1.181 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.059 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATA(78062)21780-400 SUBPLATE ASSEMBLY
CROSS-SECTIONAL HEIGHT0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAS8791/1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
SPECIFICATION/STANDARD DATA81349MIL-R-8791 REV D /CANCELED/ GOVERNMENT SPECIFICATION
PERIPHERAL DIAMETER1.177 INCHES MINIMUM AND 1.181 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.059 INCHES MINIMUM AND 1.061 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPESCARF-PERIPHERAL OVERALL
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
SAE-AS8791/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AS8791/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
21780-400 FIND 13Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-R-8791/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M8791/1-215?
M8791/1-215 is a RETAINER,PACKING.
What parts can replace M8791/1-215?
There are 4 known substitutes for M8791/1-215: SAE-AS8791/1, AS8791/1, 21780-400 FIND 13 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M8791/1-215?
M8791/1-215 is cataloged in the U.S. Government catalog under NSN 5330-01-478-8437. 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.