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Q38 ✓ 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 CUP,GREASE is a the manufacturer industrial component. Key specifications include height: 1.5000 INCHES NOMINAL IN, material: RUBBER SYNTHETIC OVERALL, shank_length: 0.3125 INCHES NOMINAL IN, document_type: INDUSTRIAL DRAWING, usage_location: CONUS, document_source: 66289. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-551-9017, 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
Q38
NSN: 5330-00-551-9017
FSC: 5330
CAGE: 07322 — MINNESOTA RUBBER CO (USA)
SPECIFICATIONS
height1.5000 INCHES NOMINAL IN
materialRUBBER SYNTHETIC OVERALL
shank_length0.3125 INCHES NOMINAL IN
document_typeINDUSTRIAL DRAWING
usage_locationCONUS
document_source66289
style_designatorSTRAIGHT, CAP FEED
peripheral_diameter3.125 INCHES NOMINAL IN
center_hole_diameter2.750 INCHES NOMINAL IN
cross-sectional_height0.188 INCHES NOMINAL IN
document_identificationQ38
assembly_clearance_radius0.4685 INCHES NOMINAL IN
NSN5330-00-551-9017
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: Q38 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
•
CROSS-SECTIONAL HEIGHT: 0.188 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
CENTER HOLE DIAMETER: 2.750 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 3.125 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.188 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
CENTER HOLE DIAMETER2.750 INCHES NOMINAL IN
PERIPHERAL DIAMETER3.125 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
N0304 2-235Interchangeable
interchangeable cross-reference
interchangeable
2-235 N304-75Interchangeable
interchangeable cross-reference
interchangeable
N304-75-235Interchangeable
interchangeable cross-reference
interchangeable
7520439Interchangeable
interchangeable cross-reference
interchangeable
X1601Interchangeable
interchangeable cross-reference
interchangeable
406775Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is Q38?
Q38 is a CUP,GREASE.
What parts can replace Q38?
There are 8 known substitutes for Q38: N0304 2-235, 2-235 N304-75, N304-75-235 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for Q38?
Q38 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-551-9017. 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