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122558 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

122558: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, housing_bore_diameter: 1.752 INCHES MINIMUM AND 1.754 INCHES MAXIMUM IN, sealing_element_style: ANGULAR, end_item_identification: W/S: SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE); COMBAT SYSTEM SUPPORT EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-359-4361, 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
122558
NSN: 5330-00-359-4361
FSC: 5330 — Packing and Gasket Materials
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
housing_bore_diameter1.752 INCHES MINIMUM AND 1.754 INCHES MAXIMUM IN
sealing_element_styleANGULAR
end_item_identificationW/S: SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE); COMBAT SYSTEM SUPPORT EQUIPMENT
accommodated_shaft_diameter0.779 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
accommodated_shaft_maximum_rated_speed1000 FEET PER MINUTE FT
NSN5330-00-359-4361
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 122558 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: 0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 1.752 INCHES MINIMUM AND 1.754 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 1000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 0.779 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER1.752 INCHES MINIMUM AND 1.754 INCHES MAXIMUM IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED1000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER0.779 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONW/S: SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE); COMBAT SYSTEM SUPPORT EQUIPMENT
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 5
5850G1013Reference document
Same NSN cross-reference
Reference document — Secondary reference
855743Reference document
Same NSN cross-reference
Reference document — Secondary reference
585K14Reference document
Same NSN cross-reference
Reference document — Secondary reference
855523Reference document
Same NSN cross-reference
Reference document — Secondary reference
9F836Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 122558?
122558 is a SEAL,PLAIN ENCASED.
What parts can replace 122558?
There are 5 known substitutes for 122558: 5850G1013, 855743, 585K14 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 122558?
122558 is cataloged in the U.S. Government catalog under NSN 5330-00-359-4361. 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.