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D250-30 — INSULATOR,DISK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

D250-30: INSULATOR,DISK.

The INSULATOR,DISK is a the manufacturer industrial component. Key specifications include material: BERYLLIUM OXIDE OVERALL, overall_height: 0.031 INCHES NOMINAL IN, outside_diameter: 0.247 INCHES NOMINAL IN, style_designator: FLAT, ROUND, center_hole_diameter: 1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN, cross-sectional_height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-121-0192, 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
D250-30
NSN: 5331-01-121-0192
NIINs: 011210192, 011593655
FSC: 5331 — O-ring
CAGE: 01212 — FEDERAL-MOGUL CORP GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialBERYLLIUM OXIDE OVERALL
overall_height0.031 INCHES NOMINAL IN
outside_diameter0.247 INCHES NOMINAL IN
style_designatorFLAT, ROUND
center_hole_diameter1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN
cross-sectional_height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NSN5331-01-121-0192
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D250-30 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: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.735 INCHES MINIMUM AND 1.773 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.735 INCHES MINIMUM AND 1.773 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES 8
4030-77Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS28775-030Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2-030 N304-75Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS568-030 MIL-P-25732Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-P-25732Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS-28775-30Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Shelf-life managedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D250-30?
D250-30 is a INSULATOR,DISK.
What parts can replace D250-30?
There are 8 known substitutes for D250-30: 4030-77, MS28775-030, 2-030 N304-75 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D250-30?
D250-30 is cataloged in the U.S. Government catalog under NSN 5331-01-121-0192. This indicates validated use in U.S. government and defense supply chains.
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