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Technical Data Sheet
PartsTable / O-RING / 1866-2MCV70
1866-2MCV70 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, cross-sectional_height: 0.125 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 5331-00-251-9398, 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
1866-2MCV70
NSN: 5331-00-251-9398
FSC: 5331 — O-RING
CAGE: 81168 — STROHMEYER, JULIE A. DBA JULIE A. STROHMEYER (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
cross-sectional_height0.125 INCHES NOMINAL IN
NSN5331-00-251-9398
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1866-2MCV70 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: 0.125 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
ASTM-D2000-01Interchangeable
interchangeable cross-reference
interchangeable
MILR3065GRADERS405ABEFInterchangeable
interchangeable cross-reference
interchangeable
MIL-STD-417AInterchangeable
interchangeable cross-reference
interchangeable
7652132Interchangeable
interchangeable cross-reference
interchangeable
5330002915787Interchangeable
interchangeable cross-reference
interchangeable
ASTMD2000-03AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1866-2MCV70?
1866-2MCV70 is a O-RING.
What parts can replace 1866-2MCV70?
There are 17 known substitutes for 1866-2MCV70: ASTM-D2000-01, MILR3065GRADERS405ABEF, MIL-STD-417A and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1866-2MCV70?
1866-2MCV70 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-251-9398. 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