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Technical Data Sheet
187381 ✓ Verified by PartsTable
Hama · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Stylish used look, functionality and all-round protection for your Apple iPhone XI: the "Guard Pro" combines everything in a mobile phone case. Your business cards are always handy in the practical insert compartment. For business or personal use: ideal for everyday life.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-312-6469, 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
187381
NSN: 5330-00-312-6469
FSC: 5330
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL
constructionONE-PIECE
outside_diameter1.313 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter1.063 INCHES NOMINAL IN
NSN5330-00-312-6469
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 187381 MFR: Hama ⚠ 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: SOLID SINGLE OR COMPOSITION
GASKET CENTER TO FLAT DISTANCE: 1.062 INCHES NOMINAL IN
BOLT HOLE QUANTITY: 6
APERTURE DIAMETER: 1.625 INCHES NOMINAL IN
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL OVERALL
BOLT CIRCLE DIAMETER: 2.125 INCHES NOMINAL IN
STYLE DESIGNATOR: CIRCULAR WITH ONE PERIPHERAL FLAT
OUTSIDE DIAMETER: 2.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
GASKET CENTER TO FLAT DISTANCE1.062 INCHES NOMINAL IN
BOLT HOLE QUANTITY6
APERTURE DIAMETER1.625 INCHES NOMINAL IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL OVERALL
BOLT CIRCLE DIAMETER2.125 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR WITH ONE PERIPHERAL FLAT
OUTSIDE DIAMETER2.375 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
HOLE DIAMETER0.125 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
3140Interchangeable
interchangeable cross-reference
interchangeable
101861Interchangeable
interchangeable cross-reference
interchangeable
1874141Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 187381?
187381 is a GASKET manufactured by Hama.
What parts can replace 187381?
There are 3 known substitutes for 187381: 3140, 101861, 1874141. Substitute compatibility should be verified for your specific system.
What is the NSN for 187381?
187381 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-312-6469. This indicates validated use in U.S. government and defense supply chains.
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