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1002-742 — SEAT,VALVE

✓ Government record, cited
3M · GATE VALVE
PRODUCT OVERVIEW

1002-742: SEAT,VALVE.

The SEAT,VALVE is a 3M industrial component. Key specifications include material: RUBBER BUNA N OVERALL, overall_height: 0.125 INCHES NOMINAL IN, hardness_rating: 24.0 SHORE DUROMETER A MINIMUM AND 28.0 SHORE DUROMETER A MAXIMUM BODY, style_designator: PLAIN, body_inside_diameter: 0.438 INCHES NOMINAL IN, body_outside_diameter: 4.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-219-5256, 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
1002-742
NSN: 4820-00-219-5256
NIINs: 002195256, 016332011
FSC: 4820 — Valves, Nonpowered
CAGE: 03670 — TYCO FIRE PRODUCTS LP (USA)
SPECIFICATIONS
materialRUBBER BUNA N OVERALL
overall_height0.125 INCHES NOMINAL IN
hardness_rating24.0 SHORE DUROMETER A MINIMUM AND 28.0 SHORE DUROMETER A MAXIMUM BODY
style_designatorPLAIN
body_inside_diameter0.438 INCHES NOMINAL IN
body_outside_diameter4.125 INCHES NOMINAL IN
seating_surface_shapeFLAT
NSN4820-00-219-5256
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1002-742 · 3M ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY OUTSIDE DIAMETER: 4.125 INCHES NOMINAL IN
•
HARDNESS RATING: 24.0 SHORE DUROMETER A MINIMUM AND 28.0 SHORE DUROMETER A MAXIMUM BODY
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUNA N OVERALL
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.125 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER4.125 INCHES NOMINAL IN
HARDNESS RATING24.0 SHORE DUROMETER A MINIMUM AND 28.0 SHORE DUROMETER A MAXIMUM BODY
HARDNESS RATING24.0 SHORE DUROMETER A MINIMUM AND 28.0 SHORE DUROMETER A MAXIMUM FACE
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER0.438 INCHES NOMINAL IN
MATERIALRUBBER BUNA N OVERALL
SEATING SURFACE SHAPEFLAT
SUBSTITUTES & CROSS-REFERENCES 1
S2742Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1002-742?
1002-742 is a SEAT,VALVE manufactured by 3M.
What parts can replace 1002-742?
There is 1 known substitute for 1002-742: S2742. Substitute compatibility should be verified for your specific system.
What is the NSN for 1002-742?
1002-742 is cataloged in the U.S. Government catalog under NSN 4820-00-219-5256. 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.