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Technical Data Sheet
PartsTable / COMPONENT / 125818
125818 ✓ 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

- Exclusive wooden frame in a modern design <br>- Incl. premium glass, antireflex coating on one side <br>- Float glass quality, ground and washed <br>- Precision mitre <br>- With prop and hanger. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, temp_rating: 350.0 FAHRENHEIT DEGF, hardness_rating: 55.0 SHORE DUROMETER A MINIMUM AND 63.0 SHORE DUROMETER A MAXIMUM OVERALL, inner_groove_width: 0.250 INCHES NOMINAL IN, outer_groove_depth: 0.188 INCHES NOMINAL IN, outer_groove_width: 0.156 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-075-9215, 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
125818
NSN: 5330-00-075-9215
FSC: 5330
CAGE: 21444 — REXNORD INDUSTRIES LLC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
temp_rating350.0 FAHRENHEIT DEGF
hardness_rating55.0 SHORE DUROMETER A MINIMUM AND 63.0 SHORE DUROMETER A MAXIMUM OVERALL
inner_groove_width0.250 INCHES NOMINAL IN
outer_groove_depth0.188 INCHES NOMINAL IN
outer_groove_width0.156 INCHES NOMINAL IN
peripheral_diameter11.438 INCHES NOMINAL IN
center_hole_diameter10.625 INCHES NOMINAL IN
cross-sectional_height0.500 INCHES NOMINAL IN
cross-sectional_shape_styleSPECIAL
outer_groove_smallest_width0.125 INCHES NOMINAL IN
NSN5330-00-075-9215
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 125818 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
•
PERIPHERAL DIAMETER: 11.438 INCHES NOMINAL IN
•
INNER GROOVE WIDTH: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.500 INCHES NOMINAL IN
•
OUTER GROOVE SMALLEST WIDTH: 0.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: SPECIAL
•
CENTER HOLE DIAMETER: 10.625 INCHES NOMINAL IN
•
TEMP RATING: 350.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 55.0 SHORE DUROMETER A MINIMUM AND 63.0 SHORE DUROMETER A MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER11.438 INCHES NOMINAL IN
INNER GROOVE WIDTH0.250 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.500 INCHES NOMINAL IN
OUTER GROOVE SMALLEST WIDTH0.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESPECIAL
CENTER HOLE DIAMETER10.625 INCHES NOMINAL IN
TEMP RATING350.0 FAHRENHEIT DEGF
HARDNESS RATING55.0 SHORE DUROMETER A MINIMUM AND 63.0 SHORE DUROMETER A MAXIMUM OVERALL
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
OUTER GROOVE WIDTH0.156 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
300-110Interchangeable
interchangeable cross-reference
interchangeable
125818Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 125818?
125818 is a INSULATOR,BLOCK manufactured by Hama.
What parts can replace 125818?
There are 2 known substitutes for 125818: 300-110, 125818. Substitute compatibility should be verified for your specific system.
What is the NSN for 125818?
125818 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-075-9215. 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