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Technical Data Sheet
PartsTable / COMPONENT / 845-4558740 ITEM 120
845-4558740 ITEM 120 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include angle: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM, material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-BUTT RETAINER, peripheral_diameter: 1.240 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN, center_hole_diameter: 1.000 INCHES NOMINAL IN, distance_between_ends: 0.047 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-171-6749, 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
845-4558740 ITEM 120
NSN: 5330-00-171-6749
FSC: 5330
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
angle25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-BUTT RETAINER
peripheral_diameter1.240 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN
center_hole_diameter1.000 INCHES NOMINAL IN
distance_between_ends0.047 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
cross-sectional_height0.075 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
cross-sectional_thickness0.025 INCHES MINIMUM AND 0.029 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE
material_document_and_classificationMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-171-6749
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 845-4558740 ITEM 120 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
•
PERIPHERAL DIAMETER: 1.240 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN
•
DISTANCE BETWEEN ENDS: 0.047 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
ANGLE: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
CENTER HOLE DIAMETER: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER1.240 INCHES MINIMUM AND 1.244 INCHES MAXIMUM IN
DISTANCE BETWEEN ENDS0.047 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESQUARE
END ITEM IDENTIFICATIONW/S: MAIN FEED PUMPS; ENGINE, AIRCRAFT TF33-PW-102 (C-135E, EC-135H/K/P); AIRCRAFT, C-18A, EC-18B; AIRCRAFT, (AC-130H, MC-130H, EC-130E, HC-130); SUPPORT EQUIPMENT, B-1 AIRCRAFT; GUN, 5-IN./54 CAL, MK-42 & 45; HELICOPTER, MH-53E; SSBN MK-118 FIRE CONTROL SYS; DEEP SUBMERGENC SYSTEMS PROGRAMS (DSSP) A
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
ANGLE25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
CENTER HOLE DIAMETER1.000 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.075 INCHES MINIMUM AND 0.087 INCHES MAXIMUM IN
JOINT TYPESCARF-BUTT RETAINER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
582813Interchangeable
interchangeable cross-reference
interchangeable
MILR5521Interchangeable
interchangeable cross-reference
interchangeable
AN6246PC23Interchangeable
interchangeable cross-reference
interchangeable
1283-218Interchangeable
interchangeable cross-reference
interchangeable
P793Interchangeable
interchangeable cross-reference
interchangeable
582838Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 845-4558740 ITEM 120?
845-4558740 ITEM 120 is a RETAINER,PACKING.
What parts can replace 845-4558740 ITEM 120?
There are 26 known substitutes for 845-4558740 ITEM 120: 582813, MILR5521, AN6246PC23 and 23 more. Substitute compatibility should be verified for your specific system.
Is 845-4558740 ITEM 120 still available?
845-4558740 ITEM 120 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026