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Technical Data Sheet
427B-305-726 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The GASKET is a the manufacturer industrial component. Key specifications include overall_width: 0.525 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN, overall_length: 3.945 INCHES MINIMUM AND 3.985 INCHES MAXIMUM IN, material_document_and_classification: SAE ASSN STD ALL MATERIAL RESPONSES INSERT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-344-8265, 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
427B-305-726
NSN: 5330-01-344-8265
FSC: 5330
CAGE: 0P9L0 — MACROTECH/SELASTOMER (USA)
SPECIFICATIONS
overall_width0.525 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
overall_length3.945 INCHES MINIMUM AND 3.985 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD ALL MATERIAL RESPONSES INSERT
NSN5330-01-344-8265
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 427B-305-726 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
MATERIAL: STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 INSERT
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD ALL MATERIAL RESPONSES INSERT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 INSERT
OVERALL WIDTH0.525 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES INSERT
OVERALL LENGTH3.945 INCHES MINIMUM AND 3.985 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
99-0726Interchangeable
interchangeable cross-reference
interchangeable
E1020Interchangeable
interchangeable cross-reference
interchangeable
M/ABIS0007Interchangeable
interchangeable cross-reference
interchangeable
10889726Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 427B-305-726?
427B-305-726 is a GASKET.
What parts can replace 427B-305-726?
There are 4 known substitutes for 427B-305-726: 99-0726, E1020, M/ABIS0007 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 427B-305-726?
427B-305-726 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-344-8265. This indicates validated use in U.S. government and defense supply chains.
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