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Technical Data Sheet
B-145-18 ✓ 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 RUBBER STRIP is a the manufacturer industrial component. Key specifications include length: 6.000 FEET NOMINAL FT, material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR, nonmetallic_hardness_rating: 30.0 NOMINAL SHORE DUROMETER A, material_document_and_classification: MIL-R-1149, TYPE 1, CLASS 3-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-355-8903, 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
B-145-18
NSN: 5330-01-355-8903
FSC: 5330
CAGE: 0PNJ9 — BAYWOOD MFG CO (USA)
SPECIFICATIONS
length6.000 FEET NOMINAL FT
materialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
nonmetallic_hardness_rating30.0 NOMINAL SHORE DUROMETER A
material_document_and_classificationMIL-R-1149, TYPE 1, CLASS 3-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE
NSN5330-01-355-8903
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B-145-18 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
NONMETALLIC HARDNESS RATING: 30.0 NOMINAL SHORE DUROMETER A
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-1149, TYPE 1, CLASS 3-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE
MATERIAL: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
LENGTH: 6.000 FEET NOMINAL FT
TECHNICAL CHARACTERISTICS (FLIS)
NONMETALLIC HARDNESS RATING30.0 NOMINAL SHORE DUROMETER A
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-1149, TYPE 1, CLASS 3-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
LENGTH6.000 FEET NOMINAL FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1857075Interchangeable
interchangeable cross-reference
interchangeable
407CInterchangeable
interchangeable cross-reference
interchangeable
820015Interchangeable
interchangeable cross-reference
interchangeable
B-1459Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-145-18?
B-145-18 is a RUBBER STRIP.
What parts can replace B-145-18?
There are 4 known substitutes for B-145-18: 1857075, 407C, 820015 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-145-18?
B-145-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-355-8903. This indicates validated use in U.S. government and defense supply chains.
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