PartsTable
Technical Data Sheet
PartsTable / O-RING / 2251-10
2251-10 ✓ Verified by PartsTable
Thule · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

Never miss a shot with a DSLR holster that provides quick access to your camera and protection while you're navigating the trail. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE, body_style: EXTERNAL FLANGE, corner_shape: SQUARE ALL CORNERS, overall_length: 0.202 INCHES NOMINAL IN, flange_diameter: 1.993 INCHES MINIMUM AND 1.996 INCHES MAXIMUM IN, body_inside_diameter: 1.810 INCHES MINIMUM AND 1.820 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-108-5691, 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
2251-10
NSN: 5331-00-108-5691
FSC: 5331 — O-RING
CAGE: 91265 — PARKER-HANNIFIN CORPORATION DIV O-RING DIVISION (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE
body_styleEXTERNAL FLANGE
corner_shapeSQUARE ALL CORNERS
overall_length0.202 INCHES NOMINAL IN
flange_diameter1.993 INCHES MINIMUM AND 1.996 INCHES MAXIMUM IN
special_featuresEXTERNAL FLANGE COUNTERBORED TO DEPTH 0.038 MIN 0.042 MAX AND DIAMETER 1.934 MIN 1.940 MAX ALSO BODY COUNTERBORED TO DEPTH 0.093 MIN 0.095 MAX AND DIAMETER 1.885 MIN 1.895 MAX ALL MEASUREMENTS INCHES
body_inside_diameter1.810 INCHES MINIMUM AND 1.820 INCHES MAXIMUM IN
body_outside_diameter1.980 INCHES MINIMUM AND 1.990 INCHES MAXIMUM IN
left_side_flange_thickness0.062 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
material_document_and_classification225110 MFR REF SINGLE MATERIAL RESPONSE
NSN5331-00-108-5691
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2251-10 MFR: Thule ⚠ 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: 0.094 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
TEMP RATING: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER SYNTHETIC
•
ELONGATION PERCENTAGE: 80 MAXIMUM
•
OUTSIDE DIAMETER: 0.949 INCHES NOMINAL IN
•
HARDNESS RATING: 90.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.094 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
CENTER HOLE DIAMETER0.750 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
TEMP RATING-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
MATERIALRUBBER SYNTHETIC
ELONGATION PERCENTAGE80 MAXIMUM
OUTSIDE DIAMETER0.949 INCHES NOMINAL IN
HARDNESS RATING90.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 36
SAE-AS28778Interchangeable
interchangeable cross-reference
interchangeable
N94-84910Interchangeable
interchangeable cross-reference
interchangeable
0XN94-84910CPInterchangeable
interchangeable cross-reference
interchangeable
D6-10Interchangeable
interchangeable cross-reference
interchangeable
B10-2Interchangeable
interchangeable cross-reference
interchangeable
43654Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2251-10?
2251-10 is a RING,WEARING manufactured by Thule.
What parts can replace 2251-10?
There are 36 known substitutes for 2251-10: SAE-AS28778, N94-84910, 0XN94-84910CP and 33 more. Substitute compatibility should be verified for your specific system.
Is 2251-10 still available?
2251-10 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