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37203 — PLATE,RETAINING,BEARING

✓ Government record, cited
BOTI · ORING SEAL
PRODUCT OVERVIEW

37203: PLATE,RETAINING,BEARING.

The PLATE,RETAINING,BEARING is a BOTI industrial component. Key specifications include diameter: 0.328 INCHES NOMINAL IN, material: RUBBER OVERALL, thickness: 0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 3.688 INCHES NOMINAL IN, fsc_application_data: INDICATOR,CLIMB,AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-629-5065, 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
37203
NSN: 5330-00-629-5065
NIINs: 006295065, 006641638, 013717922
FSC: 5330 — Packing and Gasket Materials
CAGE: 97947 — LISTER PETTER AMERICAS INCORPORATED (USA)
SPECIFICATIONS
diameter0.328 INCHES NOMINAL IN
materialRUBBER OVERALL
thickness0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter3.688 INCHES NOMINAL IN
fsc_application_dataINDICATOR,CLIMB,AIRCRAFT
cross-sectional_thickness0.250 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationAN-M-21 FED SPEC SINGLE MATERIAL RESPONSE
NSN5330-00-629-5065
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 37203 MFR: BOTI ⚠ 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
•
CROSS-SECTIONAL THICKNESS: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
APERTURE DIAMETER: 3.688 INCHES NOMINAL IN
•
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL THICKNESS0.250 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
APERTURE DIAMETER3.688 INCHES NOMINAL IN
MATERIALRUBBER OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
AD857Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 37203?
37203 is a PLATE,RETAINING,BEARING manufactured by BOTI.
What parts can replace 37203?
There is 1 known substitute for 37203: AD857. Substitute compatibility should be verified for your specific system.
What is the NSN for 37203?
37203 is cataloged in the U.S. Government catalog under NSN 5330-00-629-5065. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.