PartsTable
Technical Data Sheet
B39-1 ✓ 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 CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include material: PLASTIC, POLYETHYLENE (PP), design_type: THREADED, thread_class: 2A A, overall_diameter: 0.688 INCHES NOMINAL IN, end_item_identification: MRAP - COUGAR CAT1 A1, round_cap_outside_surface_condition: KNURLED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-005-8233, 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
B39-1
NSN: 5340-00-005-8233
FSC: 5340
CAGE: 06324 — GLENAIR, INC. (USA)
SPECIFICATIONS
materialPLASTIC, POLYETHYLENE (PP)
design_typeTHREADED
thread_class2A A
overall_diameter0.688 INCHES NOMINAL IN
end_item_identificationMRAP - COUGAR CAT1 A1
round_cap_outside_surface_conditionKNURLED
thread_size_and_series/type_designator1/2-20 UNF
tube_outside_diameter_for_which_designed0.312 INCHES NOMINAL IN
NSN5340-00-005-8233
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B39-1 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
THREAD CLASS: 2A A
ROUND CAP OUTSIDE SURFACE CONDITION: KNURLED
DESIGN TYPE: THREADED
MATERIAL: PLASTIC, POLYETHYLENE (PP)
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1/2-20 UNF
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.312 INCHES NOMINAL IN
OVERALL DIAMETER: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
ROUND CAP OUTSIDE SURFACE CONDITIONKNURLED
DESIGN TYPETHREADED
END ITEM IDENTIFICATIONMRAP - COUGAR CAT1 A1
MATERIALPLASTIC, POLYETHYLENE (PP)
THREAD SIZE AND SERIES/TYPE DESIGNATOR1/2-20 UNF
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.312 INCHES NOMINAL IN
OVERALL DIAMETER0.688 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
LEN500Interchangeable
interchangeable cross-reference
interchangeable
02030Interchangeable
interchangeable cross-reference
interchangeable
GC-5Interchangeable
interchangeable cross-reference
interchangeable
B39-1Interchangeable
interchangeable cross-reference
interchangeable
945045-1CInterchangeable
interchangeable cross-reference
interchangeable
904768-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B39-1?
B39-1 is a CRYSTAL UNIT,QUARTZ.
What parts can replace B39-1?
There are 6 known substitutes for B39-1: LEN500, 02030, GC-5 and 3 more. Substitute compatibility should be verified for your specific system.
Is B39-1 still available?
B39-1 is currently cancelled.
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