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Technical Data Sheet
PartsTable / O-RING / SP3128PCSP3128
SP3128PCSP3128 ✓ 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 BUTADIENE-ACRYLONITRILE CLASS NBR, temp_rating: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF, center_hole_diameter: 1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN, cross-sectional_height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-231-3261, 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
SP3128PCSP3128
NSN: 5331-00-231-3261
FSC: 5331 — O-RING
CAGE: 18332 — NORDSON CORP DOBOY PACKAGING MACHINERY DIV (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
center_hole_diameter1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN
cross-sectional_height0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
NSN5331-00-231-3261
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: SP3128PCSP3128 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: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
TEMP RATING: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
•
CENTER HOLE DIAMETER: 1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TEMP RATING-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
CENTER HOLE DIAMETER1.465 INCHES MINIMUM AND 1.485 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
631640Interchangeable
interchangeable cross-reference
interchangeable
100159Interchangeable
interchangeable cross-reference
interchangeable
SB340 MOD3 D08Interchangeable
interchangeable cross-reference
interchangeable
TTU347EInterchangeable
interchangeable cross-reference
interchangeable
2728Interchangeable
interchangeable cross-reference
interchangeable
28P69Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SP3128PCSP3128?
SP3128PCSP3128 is a O-RING.
What parts can replace SP3128PCSP3128?
There are 30 known substitutes for SP3128PCSP3128: 631640, 100159, SB340 MOD3 D08 and 27 more. Substitute compatibility should be verified for your specific system.
Is SP3128PCSP3128 still available?
SP3128PCSP3128 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026