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Technical Data Sheet
PartsTable / COMPONENT / 187-01.875-375
187-01.875-375 ✓ 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 187-01.875-375 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-032-8598, 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
187-01.875-375
NSN: 5330-01-032-8598
FSC: 5330
CAGE: 95272 — STILLMAN SEAL CORPORATION DIV STILLMAN SEAL CORPERATION (USA)
SPECIFICATIONS
Part Number187-01.875-375
NSN5330-01-032-8598
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 187-01.875-375 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 SHAPE STYLE: U
•
CENTER HOLE DIAMETER: 1.875 INCHES NOMINAL IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
•
MATERIAL: PLASTIC AND RUBBER SYNTHETIC OVERALL
•
PERIPHERAL DIAMETER: 2.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEU
CENTER HOLE DIAMETER1.875 INCHES NOMINAL IN
TEMP RATING-65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF
MATERIALPLASTIC AND RUBBER SYNTHETIC OVERALL
SPECIAL FEATURESFURNISHED WITH ONE O-RING SPREADER
PERIPHERAL DIAMETER2.250 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
3177-2Interchangeable
interchangeable cross-reference
interchangeable
10015366-060Interchangeable
interchangeable cross-reference
interchangeable
C-430-14Interchangeable
interchangeable cross-reference
interchangeable
613270Interchangeable
interchangeable cross-reference
interchangeable
21509NInterchangeable
interchangeable cross-reference
interchangeable
21509N GRP3 PC21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 187-01.875-375?
187-01.875-375 is a 187-01.875-375.
What parts can replace 187-01.875-375?
There are 11 known substitutes for 187-01.875-375: 3177-2, 10015366-060, C-430-14 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 187-01.875-375?
187-01.875-375 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-032-8598. 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