PartsTable
Technical Data Sheet
Download PDF

77C707891P002 — GASKET

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

77C707891P002: GASKET.

The GASKET is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 613 OVERALL, hole_diameter: 0.290 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 5.105 INCHES MINIMUM AND 5.145 INCHES MAXIMUM IN, overall_length: 8.105 INCHES MINIMUM AND 8.145 INCHES MAXIMUM IN, hardness_rating: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL, style_designator: NON-CIRCULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-071-6645, 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
77C707891P002
NSN: 5330-00-071-6645
FSC: 5330 — Packing and Gasket Materials
CAGE: 03538 — LOCKHEED MARTIN CORPORATION DIV RMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY 613 OVERALL
hole_diameter0.290 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width5.105 INCHES MINIMUM AND 5.145 INCHES MAXIMUM IN
overall_length8.105 INCHES MINIMUM AND 8.145 INCHES MAXIMUM IN
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
style_designatorNON-CIRCULAR
bolt_hole_quantity16
outside_corner_radius0.125 INCHES NOMINAL IN
cross-sectional_thickness0.375 INCHES NOMINAL IN
cross-sectional_shape_styleMETAL AND SYNTHETIC RUBBER
material_document_and_classificationQQ-C-450 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
outside_edge_to_bolt_hole_center_distance_along_width0.312 INCHES NOMINAL IN
NSN5330-00-071-6645
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 77C707891P002 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 THICKNESS: 0.375 INCHES NOMINAL IN
•
HARDNESS RATING: 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
•
STYLE DESIGNATOR: NON-CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-450 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND SYNTHETIC RUBBER
•
BOLT HOLE QUANTITY: 16
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.375 INCHES NOMINAL IN
HARDNESS RATING55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM OVERALL
STYLE DESIGNATORNON-CIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-450 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH8.105 INCHES MINIMUM AND 8.145 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLEMETAL AND SYNTHETIC RUBBER
OVERALL WIDTH5.105 INCHES MINIMUM AND 5.145 INCHES MAXIMUM IN
BOLT HOLE QUANTITY16
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH1.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH1.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 77C707891P002?
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 77C707891P002?
77C707891P002 is a GASKET.
What is the NSN for 77C707891P002?
77C707891P002 is cataloged in the U.S. Government catalog under NSN 5330-00-071-6645. 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 — 77C707891P002

✓ 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.