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Technical Data Sheet
PartsTable / MRO / 5238-1
5238-1 ✓ Verified by PartsTable
Bestway · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The TELETYPEWRITER SUBASSEMBLY is a Bestway industrial component. Key specifications include overall_length: 2.279 INCHES NOMINAL IN, overall_diameter: 1.125 INCHES NOMINAL IN, end_item_identification: TELETYPEWRITER SET MODEL 37ASR, component_type_and_quantity: 1 KNOB AND 1 SHAFT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-038-2702, 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
MRO→ MRO_GENERAL→ 5238-1
NSN: 5331-00-038-2702
FSC: 5331 — O-RING
CAGE: 08302 — PACCAR WINCH INC DBA PACCAR WINCH DIVISION (USA)
SPECIFICATIONS
overall_length2.279 INCHES NOMINAL IN
overall_diameter1.125 INCHES NOMINAL IN
end_item_identificationTELETYPEWRITER SET MODEL 37ASR
component_type_and_quantity1 KNOB AND 1 SHAFT
NSN5331-00-038-2702
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5238-1 MFR: Bestway ⚠ 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: RUBBER SYNTHETIC
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.419 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.419 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
G1-1-1Interchangeable
interchangeable cross-reference
interchangeable
975-0002-001Interchangeable
interchangeable cross-reference
interchangeable
52381Interchangeable
interchangeable cross-reference
interchangeable
SM-B-157128Interchangeable
interchangeable cross-reference
interchangeable
236Interchangeable
interchangeable cross-reference
interchangeable
50561Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5238-1?
5238-1 is a TELETYPEWRITER SUBASSEMBLY manufactured by Bestway. It is classified as a MRO (MRO_GENERAL).
What parts can replace 5238-1?
There are 11 known substitutes for 5238-1: G1-1-1, 975-0002-001, 52381 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5238-1?
5238-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-038-2702. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026