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243-7106735-8 — SEAL,NONMETALLIC SPECIAL SHAPED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

243-7106735-8: SEAL,NONMETALLIC SPECIAL SHAPED.

SEAL,NONMETALLIC SPECIAL SHAPED. Key specifications include material: RUBBER SYNTHETIC OVERALL, construction: ONE-PIECEONE-PIECE, hardness_rating: 50.0 SHORE DUROMETER A NOMINAL OVERALL, special_features: CROSS SECTION HAS SLOPE OF 15 DEGS TO A HEIGHT OF 0.88;ACROSS TOP BEFORE START OF SLOPE IT IS 0.620IN IN, style_designator: CIRCULAR, aperture_diameter: 24.500 INCHES NOMINAL24.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-509-9575, 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
243-7106735-8
NSN: 5330-01-509-9575
FSC: 5330 — Packing and Gasket Materials
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
constructionONE-PIECEONE-PIECE
hardness_rating50.0 SHORE DUROMETER A NOMINAL OVERALL
special_featuresCROSS SECTION HAS SLOPE OF 15 DEGS TO A HEIGHT OF 0.88;ACROSS TOP BEFORE START OF SLOPE IT IS 0.620IN IN
style_designatorCIRCULAR
aperture_diameter24.500 INCHES NOMINAL24.500 INCHES NOMINAL IN
cross-sectional_width2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN
cross-sectional_height1.380 INCHES NOMINAL1.380 INCHES NOMINAL IN
end_item_identificationMAIN SHAFT STERN TUBE CLOSURE DEVICE & SNUBBER ASSYMAIN SHAFT STERN TUBE CLOSURE DEVICE & SNUBBER ASSY
cross-sectional_shape_styleSPECIALSPECIAL
material_document_and_classificationMIL-R-6855 CL-1 GR-50 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyPACKING SPLIT
NSN5330-01-509-9575
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 243-7106735-8 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: 1.380 INCHES NOMINAL1.380 INCHES NOMINAL IN
•
CROSS-SECTIONAL WIDTH: 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN
•
HARDNESS RATING: 50.0 SHORE DUROMETER A NOMINAL OVERALL
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855 CL-1 GR-50 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SPECIALSPECIAL
•
APERTURE DIAMETER: 24.500 INCHES NOMINAL24.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT1.380 INCHES NOMINAL1.380 INCHES NOMINAL IN
CROSS-SECTIONAL WIDTH2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN
HARDNESS RATING50.0 SHORE DUROMETER A NOMINAL OVERALL
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855 CL-1 GR-50 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESPECIALSPECIAL
APERTURE DIAMETER24.500 INCHES NOMINAL24.500 INCHES NOMINAL IN
SPECIAL FEATURESCROSS SECTION HAS SLOPE OF 15 DEGS TO A HEIGHT OF 0.88;ACROSS TOP BEFORE START OF SLOPE IT IS 0.620IN IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPACKING SPLIT
END ITEM IDENTIFICATIONMAIN SHAFT STERN TUBE CLOSURE DEVICE & SNUBBER ASSYMAIN SHAFT STERN TUBE CLOSURE DEVICE & SNUBBER ASSY
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 1
H719-0205-8Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 243-7106735-8?
243-7106735-8 is a SEAL,NONMETALLIC SPECIAL SHAPED.
What parts can replace 243-7106735-8?
There is 1 known substitute for 243-7106735-8: H719-0205-8. Substitute compatibility should be verified for your specific system.
What is the NSN for 243-7106735-8?
243-7106735-8 is cataloged in the U.S. Government catalog under NSN 5330-01-509-9575. 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.