PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1U311
1U311 ✓ 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 PACKING,PREFORMED is a the manufacturer industrial component. Key specifications include color: BLACK, material: RUBBER SYNTHETIC OVERALL, center_hole_diameter: 4.750 INCHES NOMINAL IN, cross-sectional_height: 0.125 INCHES NOMINAL IN, cross-sectional_shape_style: O-RING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-4801, 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
1U311
NSN: 5330-00-641-4801
FSC: 5330
CAGE: K4629 — BOUGHTON ENGINEERING LIMITED (GBR)
SPECIFICATIONS
colorBLACK
materialRUBBER SYNTHETIC OVERALL
center_hole_diameter4.750 INCHES NOMINAL IN
cross-sectional_height0.125 INCHES NOMINAL IN
cross-sectional_shape_styleO-RING
NSN5330-00-641-4801
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1U311 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
•
CENTER HOLE DIAMETER: 4.750 INCHES NOMINAL IN
•
COLOR: BLACK
•
CROSS-SECTIONAL SHAPE STYLE: O-RING
•
CROSS-SECTIONAL HEIGHT: 0.125 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER4.750 INCHES NOMINAL IN
COLORBLACK
CROSS-SECTIONAL SHAPE STYLEO-RING
CROSS-SECTIONAL HEIGHT0.125 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
186626WInterchangeable
interchangeable cross-reference
interchangeable
186626Interchangeable
interchangeable cross-reference
interchangeable
25C560Interchangeable
interchangeable cross-reference
interchangeable
S826Interchangeable
interchangeable cross-reference
interchangeable
PIDSTEFC125Interchangeable
interchangeable cross-reference
interchangeable
E9926Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1U311?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1U311?
1U311 is a PACKING,PREFORMED.
What parts can replace 1U311?
There are 7 known substitutes for 1U311: 186626W, 186626, 25C560 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1U311?
1U311 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-641-4801. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1U311

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026