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MS28774-434 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MS28774-434: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include cut_type: DIAGONAL RETAINER, material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, peripheral_diameter: 5.858 INCHES NOMINAL IN, center_hole_diameter: 5.621 INCHES MINIMUM AND 5.623 INCHES MAXIMUM IN, cross-sectional_height: 0.235 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN, cross-sectional_shape_style: SQUARE/RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-343-3202, 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
MS28774-434
NSN: 5330-01-343-3202
FSC: 5330 — Packing and Gasket Materials
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
cut_typeDIAGONAL RETAINER
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
peripheral_diameter5.858 INCHES NOMINAL IN
center_hole_diameter5.621 INCHES MINIMUM AND 5.623 INCHES MAXIMUM IN
cross-sectional_height0.235 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
material_document_and_classificationSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-343-3202
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28774-434 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: 0.235 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
CUT TYPE: DIAGONAL RETAINER
•
PERIPHERAL DIAMETER: 5.858 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 5.621 INCHES MINIMUM AND 5.623 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.235 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CUT TYPEDIAGONAL RETAINER
PERIPHERAL DIAMETER5.858 INCHES NOMINAL IN
CENTER HOLE DIAMETER5.621 INCHES MINIMUM AND 5.623 INCHES MAXIMUM IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE 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 6
566-6985434-39Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SAE-AS8791/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
M8791/1-434Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-R-8791/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS8791/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
H623-0507-39Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 MS28774-434?
MS28774-434 is a RETAINER,PACKING.
What parts can replace MS28774-434?
There are 6 known substitutes for MS28774-434: 566-6985434-39, SAE-AS8791/1, M8791/1-434 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28774-434?
MS28774-434 is cataloged in the U.S. Government catalog under NSN 5330-01-343-3202. 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.