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346648 — CLAMP BLOCK ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

346648: CLAMP BLOCK ASSEMBLY.

The CLAMP BLOCK ASSEMBLY is a the manufacturer industrial component. Key specifications include material: RUBBER, center_hole_diameter: 1.109 INCHES MINIMUM AND 1.129 INCHES MAXIMUM IN, cross-sectional_height: 0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN, end_item_identification: PUMP PARTS,SHIP PROVISIONING, general_characteristics_item_description: MATL: CLAMP BLOCKS-MAPLE WOOD; INSERTS-SYNTHETIC RUBBER; DIM. 4.750 IN.

LG; 4.360 IN. W; 0.540 IN. THK IN.

This part is cataloged in the U.S. Government catalog under NSN 5331-00-541-2128, 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
346648
NSN: 5331-00-541-2128
NIINs: 005412128, 010989567, 012195274, 016708054
FSC: 5331 — O-ring
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialRUBBER
center_hole_diameter1.109 INCHES MINIMUM AND 1.129 INCHES MAXIMUM IN
cross-sectional_height0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
end_item_identificationPUMP PARTS,SHIP PROVISIONING
general_characteristics_item_descriptionMATL: CLAMP BLOCKS-MAPLE WOOD; INSERTS-SYNTHETIC RUBBER; DIM. 4.750 IN. LG; 4.360 IN. W; 0.540 IN. THK IN
NSN5331-00-541-2128
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 346648 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: 0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 1.109 INCHES MINIMUM AND 1.129 INCHES MAXIMUM IN
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
CENTER HOLE DIAMETER1.109 INCHES MINIMUM AND 1.129 INCHES MAXIMUM IN
MATERIALRUBBER
SUBSTITUTES & CROSS-REFERENCES 1
573429-02Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 346648?
346648 is a CLAMP BLOCK ASSEMBLY.
What parts can replace 346648?
There is 1 known substitute for 346648: 573429-02. Substitute compatibility should be verified for your specific system.
What is the NSN for 346648?
346648 is cataloged in the U.S. Government catalog under NSN 5331-00-541-2128. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.