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Technical Data Sheet
NAS1611-129 ✓ 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 color: BLACK, material: RUBBER ETHYLENE-PROPYLENE CLASS EPM, temp_rating: -70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 1.734 INCHES MINIMUM AND 1.776 INCHES MAXIMUM IN, center_hole_diameter: 1.534 INCHES MINIMUM AND 1.564 INCHES MAXIMUM 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 5331-00-127-2521, 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
NAS1611-129
NSN: 5331-00-127-2521
FSC: 5331 — O-RING
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
colorBLACK
materialRUBBER ETHYLENE-PROPYLENE CLASS EPM
temp_rating-70.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter1.734 INCHES MINIMUM AND 1.776 INCHES MAXIMUM IN
center_hole_diameter1.534 INCHES MINIMUM AND 1.564 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
specification/standard_data80205-NAS1611 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
criticality_code_justificationZZZY
material_document_and_classificationNAS1613,CL 1 ASSN STD SINGLE MATERIAL RESPONSE
reference_number_differentiating_characteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
NSN5331-00-127-2521
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS1611-129 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: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIAL: RUBBER ETHYLENE-PROPYLENE CLASS EPM
CENTER HOLE DIAMETER: 1.534 INCHES MINIMUM AND 1.564 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MATERIALRUBBER ETHYLENE-PROPYLENE CLASS EPM
CENTER HOLE DIAMETER1.534 INCHES MINIMUM AND 1.564 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
AS568B-129Interchangeable
interchangeable cross-reference
interchangeable
NAS1611-129Interchangeable
interchangeable cross-reference
interchangeable
RWS-568-129Interchangeable
interchangeable cross-reference
interchangeable
NAS1611Interchangeable
interchangeable cross-reference
interchangeable
AN6227B/118Interchangeable
interchangeable cross-reference
interchangeable
NAS1613Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS1611-129?
NAS1611-129 is a O-RING.
What parts can replace NAS1611-129?
There are 23 known substitutes for NAS1611-129: AS568B-129, NAS1611-129, RWS-568-129 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS1611-129?
NAS1611-129 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-127-2521. This indicates validated use in U.S. government and defense supply chains.
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