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PartsTable / COMPONENT / D12748
D12748 ✓ 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 ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 1.938 INCHES NOMINAL IN, cut_type: DIAGONAL BOTTOM RING, material: COTTON OR RUBBER SYNTHETIC BOTTOM RING, joint_type: SCARF-PERIPHERAL INTERMEDIATE RING, inside_diameter: 1.750 INCHES NOMINAL IN, outside_diameter: 2.500 INCHES NOMINAL 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 5330-00-447-3493, 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
D12748
NSN: 5330-00-447-3493
FSC: 5330
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
height1.938 INCHES NOMINAL IN
cut_typeDIAGONAL BOTTOM RING
materialCOTTON OR RUBBER SYNTHETIC BOTTOM RING
joint_typeSCARF-PERIPHERAL INTERMEDIATE RING
inside_diameter1.750 INCHES NOMINAL IN
outside_diameter2.500 INCHES NOMINAL IN
intermediate_ring_quantity8
cross-sectional_shape_styleANGLE BOTTOM RING
NSN5330-00-447-3493
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D12748 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
•
MATERIAL: COTTON OR RUBBER SYNTHETIC BOTTOM RING
•
OUTSIDE DIAMETER: 2.500 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
JOINT TYPE: SCARF-PERIPHERAL TOP RING
•
CROSS-SECTIONAL SHAPE STYLE: ANGLE BOTTOM RING
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOTTON OR RUBBER SYNTHETIC BOTTOM RING
OUTSIDE DIAMETER2.500 INCHES NOMINAL IN
MATERIALCOTTON AND RUBBER SYNTHETIC TOP RING
INSIDE DIAMETER1.750 INCHES NOMINAL IN
JOINT TYPESCARF-PERIPHERAL TOP RING
MATERIALCOTTON AND RUBBER SYNTHETIC INTERMEDIATE RING
CROSS-SECTIONAL SHAPE STYLEANGLE BOTTOM RING
CROSS-SECTIONAL SHAPE STYLEU INTERMEDIATE RING
CUT TYPEDIAGONAL TOP RING
CUT TYPEDIAGONAL INTERMEDIATE RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
12748Interchangeable
interchangeable cross-reference
interchangeable
12748-05-50-0035Interchangeable
interchangeable cross-reference
interchangeable
12748-5Interchangeable
interchangeable cross-reference
interchangeable
0310Interchangeable
interchangeable cross-reference
interchangeable
1057Interchangeable
interchangeable cross-reference
interchangeable
ASC1257675Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D12748?
D12748 is a PACKING ASSEMBLY.
What parts can replace D12748?
There are 6 known substitutes for D12748: 12748, 12748-05-50-0035, 12748-5 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D12748?
D12748 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-447-3493. 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