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H677-2301-857 — SEAL,NONMETALLIC STRIP

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H677-2301-857: SEAL,NONMETALLIC STRIP.

The SEAL,NONMETALLIC STRIP is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, construction: SOLID, overall_length: 14.280 INCHES NOMINAL IN, special_features: CONTAINS 3 HOLES, .144IN. DIA.

SPACED 6 INCHES APART,1.14 INCHES FROM BOTH ENDS IN, style_designator: STRIP, cross-sectional_width: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S. Government catalog under NSN 5330-01-497-7524, 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
H677-2301-857
NSN: 5330-01-497-7524
FSC: 5330 — Packing and Gasket Materials
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
constructionSOLID
overall_length14.280 INCHES NOMINAL IN
special_featuresCONTAINS 3 HOLES, .144IN. DIA. SPACED 6 INCHES APART,1.14 INCHES FROM BOTH ENDS IN
style_designatorSTRIP
cross-sectional_width0.125 INCHES NOMINAL IN
cross-sectional_height0.660 INCHES NOMINAL IN
end_item_identificationLOS ANGELES CLASS SSN (688)
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyGASKET
NSN5330-01-497-7524
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H677-2301-857 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: 0.660 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRIP
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.660 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH0.125 INCHES NOMINAL IN
STYLE DESIGNATORSTRIP
OVERALL LENGTH14.280 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESCONTAINS 3 HOLES, .144IN. DIA. SPACED 6 INCHES APART,1.14 INCHES FROM BOTH ENDS IN
PART NAME ASSIGNED BY CONTROLLING AGENCYGASKET
END ITEM IDENTIFICATIONLOS ANGELES CLASS SSN (688)
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
CONSTRUCTIONSOLID
SUBSTITUTES & CROSS-REFERENCES 1
569-7067769-858Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is H677-2301-857?
H677-2301-857 is a SEAL,NONMETALLIC STRIP.
What parts can replace H677-2301-857?
There is 1 known substitute for H677-2301-857: 569-7067769-858. Substitute compatibility should be verified for your specific system.
What is the NSN for H677-2301-857?
H677-2301-857 is cataloged in the U.S. Government catalog under NSN 5330-01-497-7524. 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.