PartsTable
Technical Data Sheet
Download PDF

MS28774-439 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MS28774-439: 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: 6.995 INCHES MINIMUM AND 6.997 INCHES MAXIMUM IN, center_hole_diameter: 6.523 INCHES MINIMUM AND 6.525 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-045-2491, 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
MS28774-439
NSN: 5330-01-045-2491
NIINs: 010452491, 014538386
FSC: 5330 — Packing and Gasket Materials
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
cut_typeDIAGONAL OVERALL
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL RETAINER
peripheral_diameter6.995 INCHES MINIMUM AND 6.997 INCHES MAXIMUM IN
center_hole_diameter6.523 INCHES MINIMUM AND 6.525 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
departure_from_cited_documentMATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
criticality_code_justificationZZZW
material_document_and_classificationSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-045-2491
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28774-439 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: 0.106 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
CUT TYPE: DIAGONAL OVERALL
•
PERIPHERAL DIAMETER: 6.972 INCHES MINIMUM AND 6.976 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 6.738 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
JOINT TYPE: SCARF-PERIPHERAL RETAINER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.106 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CUT TYPEDIAGONAL OVERALL
PERIPHERAL DIAMETER6.972 INCHES MINIMUM AND 6.976 INCHES MAXIMUM IN
CENTER HOLE DIAMETER6.738 INCHES NOMINAL IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPESCARF-PERIPHERAL RETAINER
SUBSTITUTES & CROSS-REFERENCES 1
AS7891-439Reference 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
Ready to buy MS28774-439?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MS28774-439?
MS28774-439 is a RETAINER,PACKING.
What parts can replace MS28774-439?
There is 1 known substitute for MS28774-439: AS7891-439. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28774-439?
MS28774-439 is cataloged in the U.S. Government catalog under NSN 5330-01-045-2491. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MS28774-439