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Technical Data Sheet
PartsTable / COMPONENT / 12965-27
12965-27 ✓ 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 MATERIAL is a the manufacturer industrial component. Key specifications include material: RESIN AND LEAD AND COTTON, cross-sectional_width: 0.250 INCHES NOMINAL IN, special_test_features: SPECIAL QUALITY CONTROL TESTING, cross-sectional_height: 0.250 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE, nondefinitive_spec/std_data: 1 CLASS AND B TYPE AND 1433 SYMBOL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-123-3993, 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
12965-27
NSN: 5330-01-123-3993
FSC: 5330
CAGE: 83130 — AIR & LIQUID SYSTEMS CORPORATION DBA BUFFALO PUMPS (USA)
SPECIFICATIONS
materialRESIN AND LEAD AND COTTON
cross-sectional_width0.250 INCHES NOMINAL IN
special_test_featuresSPECIAL QUALITY CONTROL TESTING
cross-sectional_height0.250 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE
nondefinitive_spec/std_data1 CLASS AND B TYPE AND 1433 SYMBOL
departure_from_cited_documentAS MODIFIED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION
criticality_code_justificationZZZW
material_document_and_classificationMIL-P-17303, CLASS 1, TYPE B MIL SPEC SINGLE MATERIAL RESPONSE
NSN5330-01-123-3993
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12965-27 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 WIDTH: 0.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.250 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-P-17303, CLASS 1, TYPE B MIL SPEC SINGLE MATERIAL RESPONSE
•
SPECIAL TEST FEATURES: SPECIAL QUALITY CONTROL TESTING
•
DEPARTURE FROM CITED DOCUMENT: AS MODIFIED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION
•
NONDEFINITIVE SPEC/STD DATA: 1 CLASS AND B TYPE AND 1433 SYMBOL
•
TEST DATA DOCUMENT: 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL WIDTH0.250 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.250 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONZZZW
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-17303, CLASS 1, TYPE B MIL SPEC SINGLE MATERIAL RESPONSE
SPECIAL TEST FEATURESSPECIAL QUALITY CONTROL TESTING
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS AND CERTIFIED FREE FROM MERCURY CONTAMINATION
NONDEFINITIVE SPEC/STD DATA1 CLASS AND B TYPE AND 1433 SYMBOL
TEST DATA DOCUMENT81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MATERIALRESIN AND LEAD AND COTTON
CROSS-SECTIONAL SHAPE STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
MILP17303Interchangeable
interchangeable cross-reference
interchangeable
101A247ABP1Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-17303-1/8 IN THKInterchangeable
interchangeable cross-reference
interchangeable
187-1 1/8INInterchangeable
interchangeable cross-reference
interchangeable
5330PL1448691Interchangeable
interchangeable cross-reference
interchangeable
55-01-02 ITEM 11 3/8 IN SQInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12965-27?
12965-27 is a PACKING MATERIAL.
What parts can replace 12965-27?
There are 14 known substitutes for 12965-27: MILP17303, 101A247ABP1, MIL-P-17303-1/8 IN THK and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12965-27?
12965-27 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-123-3993. 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