PartsTable
Technical Data Sheet
PartsTable / COMPONENT / ZZ-R-765,CL2B,GR70/AS568-439
ZZ-R-765,CL2B,GR70/AS568-439 ✓ 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 ZZ-R-765,CL2B,GR70/AS568-439 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 5330-01-237-3041, 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
ZZ-R-765,CL2B,GR70/AS568-439
NSN: 5330-01-237-3041
FSC: 5330
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
Part NumberZZ-R-765,CL2B,GR70/AS568-439
NSN5330-01-237-3041
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ZZ-R-765,CL2B,GR70/AS568-439 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 SHAPE STYLE: O-RING
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS.
•
CROSS-SECTIONAL HEIGHT: 0.275 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
PERIPHERAL DIAMETER: 7.025 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CENTER HOLE DIAMETER: 6.475 INCHES NOMINAL IN
•
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEO-RING
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS.
CROSS-SECTIONAL HEIGHT0.275 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONZZZY
PERIPHERAL DIAMETER7.025 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE DIAMETER6.475 INCHES NOMINAL IN
MATERIALRUBBER OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
AA55759-058-D-7Interchangeable
interchangeable cross-reference
interchangeable
A-A-59588Interchangeable
interchangeable cross-reference
interchangeable
ZZ-R-765Interchangeable
interchangeable cross-reference
interchangeable
A6689.213.343Interchangeable
interchangeable cross-reference
interchangeable
20202PC39Interchangeable
interchangeable cross-reference
interchangeable
216-4455070Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ZZ-R-765,CL2B,GR70/AS568-439?
ZZ-R-765,CL2B,GR70/AS568-439 is a ZZ-R-765,CL2B,GR70/AS568-439.
What parts can replace ZZ-R-765,CL2B,GR70/AS568-439?
There are 18 known substitutes for ZZ-R-765,CL2B,GR70/AS568-439: AA55759-058-D-7, A-A-59588, ZZ-R-765 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ZZ-R-765,CL2B,GR70/AS568-439?
ZZ-R-765,CL2B,GR70/AS568-439 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-237-3041. 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