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Technical Data Sheet
PartsTable / COMPONENT / DP-1250(BLACK)
DP-1250(BLACK) ✓ 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 DP-1250(BLACK) 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 5340-01-259-3951, 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
DP-1250(BLACK)
NSN: 5340-01-259-3951
FSC: 5340
CAGE: 28520 — HEYCO INC DBA HEYCO PRODUCTS (USA)
SPECIFICATIONS
Part NumberDP-1250(BLACK)
NSN5340-01-259-3951
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: DP-1250(BLACK) 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
•
STYLE DESIGNATOR: WIRE SPRING FLANGED BOTTOM
•
MATERIAL ACCOMMODATED THICKNESS: 0.125 INCHES MAXIMUM IN
•
BOTTOM OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON
•
HEAD OUTSIDE DIAMETER: 1.375 INCHES NOMINAL IN
•
HOLE ACCOMMODATION DIAMETER: 1.250 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORWIRE SPRING FLANGED BOTTOM
MATERIAL ACCOMMODATED THICKNESS0.125 INCHES MAXIMUM IN
SPECIAL FEATURESCOLOR BLACK
BOTTOM OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIALPLASTIC POLYAMIDE NYLON
HEAD OUTSIDE DIAMETER1.375 INCHES NOMINAL IN
HOLE ACCOMMODATION DIAMETER1.250 INCHES NOMINAL IN
HEAD HEIGHT0.062 INCHES NOMINAL IN
OVERALL HEIGHT0.453 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
K71643Interchangeable
interchangeable cross-reference
interchangeable
678Interchangeable
interchangeable cross-reference
interchangeable
2740Interchangeable
IBM PCI RAID Disk Controller
interchangeable
LS9Interchangeable
interchangeable cross-reference
interchangeable
32239Interchangeable
interchangeable cross-reference
interchangeable
SG3918PC25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DP-1250(BLACK)?
DP-1250(BLACK) is a DP-1250(BLACK).
What parts can replace DP-1250(BLACK)?
There are 15 known substitutes for DP-1250(BLACK): K71643, 678, 2740 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DP-1250(BLACK)?
DP-1250(BLACK) is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-259-3951. 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