PartsTable
Technical Data Sheet
4-87-1 ✓ 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 FACEPIECE,MASK,OXYGEN is a the manufacturer industrial component. Key specifications include material: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, flat_height: 0.188 INCHES NOMINAL SINGLE ACTUATOR IN, shaft_length: 0.688 INCHES NOMINAL SINGLE ACTUATOR IN, document_type: SUPPLY CATALOG. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-285-9461, 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
4-87-1
NSN: 5330-00-285-9461
FSC: 5330
CAGE: 54641 — LEAR SIEGLER INC SHERWOOD DIV (USA)
SPECIFICATIONS
materialLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
flat_height0.188 INCHES NOMINAL SINGLE ACTUATOR IN
shaft_length0.688 INCHES NOMINAL SINGLE ACTUATOR IN
document_typeSUPPLY CATALOG
pole_quantity1 EACH SECTION FRONT
terminal_typeTAB W/SCREW
shaft_diameter0.250 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity1 EACH SECTION FRONT
document_source70048
outside_diameter1.878 INCHES NOMINAL IN
NSN5330-00-285-9461
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4-87-1 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
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
HOUSING BORE DIAMETER: 1.874 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER: 1.125 INCHES NOMINAL IN
SEALING ELEMENT STYLE: ANGULAR
SURFACE TREATMENT: PLASTIC CASE
OUTSIDE DIAMETER: 1.878 INCHES NOMINAL IN
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
SEAL WIDTH: 0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
HOUSING BORE DIAMETER1.874 INCHES NOMINAL IN
ACCOMMODATED SHAFT DIAMETER1.125 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
SURFACE TREATMENTPLASTIC CASE
OUTSIDE DIAMETER1.878 INCHES NOMINAL IN
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
SEAL WIDTH0.406 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
CASE STYLESQUARE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
11209Interchangeable
interchangeable cross-reference
interchangeable
P6130AInterchangeable
interchangeable cross-reference
interchangeable
144488Interchangeable
interchangeable cross-reference
interchangeable
663Interchangeable
interchangeable cross-reference
interchangeable
2533406-1Interchangeable
interchangeable cross-reference
interchangeable
A7Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-87-1?
4-87-1 is a FACEPIECE,MASK,OXYGEN.
What parts can replace 4-87-1?
There are 31 known substitutes for 4-87-1: 11209, P6130A, 144488 and 28 more. Substitute compatibility should be verified for your specific system.
Is 4-87-1 still available?
4-87-1 is currently cancelled.
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