PartsTable
Technical Data Sheet
PartsTable / O-RING / 7-755-21900
7-755-21900 ✓ 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: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.554 INCHES MINIMUM AND 1.594 INCHES MAXIMUM IN, center_hole_diameter: 1.290 INCHES MINIMUM AND 1.302 INCHES MAXIMUM IN, elongation_percentage: 331 MAXIMUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-013-7784, 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
7-755-21900
NSN: 5331-00-013-7784
FSC: 5331 — O-RING
CAGE: 12361 — GROVE U.S. LLC DBA GROVE US LLC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
temp_rating-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter1.554 INCHES MINIMUM AND 1.594 INCHES MAXIMUM IN
center_hole_diameter1.290 INCHES MINIMUM AND 1.302 INCHES MAXIMUM IN
elongation_percentage331 MAXIMUM
cross-sectional_height0.135 INCHES MINIMUM IN
NSN5331-00-013-7784
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7-755-21900 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
•
ELONGATION PERCENTAGE: 331 MAXIMUM
•
OUTSIDE DIAMETER: 1.554 INCHES MINIMUM AND 1.594 INCHES MAXIMUM IN
•
TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM IN
•
CENTER HOLE DIAMETER: 1.290 INCHES MINIMUM AND 1.302 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
ELONGATION PERCENTAGE331 MAXIMUM
OUTSIDE DIAMETER1.554 INCHES MINIMUM AND 1.594 INCHES MAXIMUM IN
TEMP RATING-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM IN
CENTER HOLE DIAMETER1.290 INCHES MINIMUM AND 1.302 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
903509C1Interchangeable
interchangeable cross-reference
interchangeable
2-219V1226-75Interchangeable
interchangeable cross-reference
interchangeable
AS568-219Interchangeable
interchangeable cross-reference
interchangeable
2-219N552-90Interchangeable
interchangeable cross-reference
interchangeable
2-219N552-9Interchangeable
interchangeable cross-reference
interchangeable
39-685Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7-755-21900?
7-755-21900 is a O-RING.
What parts can replace 7-755-21900?
There are 25 known substitutes for 7-755-21900: 903509C1, 2-219V1226-75, AS568-219 and 22 more. Substitute compatibility should be verified for your specific system.
Is 7-755-21900 still available?
7-755-21900 is currently cancelled.
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Last verified: July 2026