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B8743 — CYLINDER,RECIPROCATING COMPRESSO

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

B8743: CYLINDER,RECIPROCATING COMPRESSO.

CYLINDER,RECIPROCATING COMPRESSO. Key specifications include special_features: COMPRESSOR. SSR NAME IS VALVE ASY 4TH STAGE, end_item_identification: BOOST COMPRESSOR ASSEMBLY, part_name_assigned_by_controlling_agency: VALVE ASSY, 4TH STAGE NGEN-30S.

This part is cataloged in the U.S. Government catalog under NSN 5331-01-606-3902, 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
B8743
NSN: 5331-01-606-3902
NIINs: 016063902, 016064528, 016064585, 016065297, 016065503
FSC: 5331 — O-ring
CAGE: 28953 — RIX INDUSTRIES (USA)
SPECIFICATIONS
special_featuresCOMPRESSOR. SSR NAME IS VALVE ASY 4TH STAGE
end_item_identificationBOOST COMPRESSOR ASSEMBLY
part_name_assigned_by_controlling_agencyVALVE ASSY, 4TH STAGE NGEN-30S
NSN5331-01-606-3902
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B8743 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
SUBSTITUTES & CROSS-REFERENCES 5
MX123-217-5CPSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
B8743 REV I ITEM 2Reference document
Same NSN cross-reference
Reference document — Secondary reference
B8743 REV I ITEM 2CPSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MX123-217-5Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
XM123-217-5Same 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 B8743?
B8743 is a CYLINDER,RECIPROCATING COMPRESSO.
What parts can replace B8743?
There are 5 known substitutes for B8743: MX123-217-5CP, B8743 REV I ITEM 2, B8743 REV I ITEM 2CP and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B8743?
B8743 is cataloged in the U.S. Government catalog under NSN 5331-01-606-3902. This indicates validated use in U.S. government and defense supply chains.
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