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26420 PIECE 8 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

26420 PIECE 8: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include case_style: SQUARE, seal_width: 0.591 INCHES NOMINAL IN, sealing_element_style: VERTICAL, accommodated_shaft_diameter: 7.874 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-264-1085, 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
26420 PIECE 8
NSN: 5330-01-264-1085
FSC: 5330 — Packing and Gasket Materials
CAGE: 29899 — CALGON CARBON UV TECHNOLOGIES LLC DBA HYDE MARINE (USA)
SPECIFICATIONS
case_styleSQUARE
seal_width0.591 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter7.874 INCHES NOMINAL IN
NSN5330-01-264-1085
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 26420 PIECE 8 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
•
SEAL WIDTH: 0.591 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 7.874 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.591 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER7.874 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
78705Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
78705CRW1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 26420 PIECE 8?
26420 PIECE 8 is a SEAL,PLAIN ENCASED.
What parts can replace 26420 PIECE 8?
There are 2 known substitutes for 26420 PIECE 8: 78705, 78705CRW1. Substitute compatibility should be verified for your specific system.
What is the NSN for 26420 PIECE 8?
26420 PIECE 8 is cataloged in the U.S. Government catalog under NSN 5330-01-264-1085. 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.