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100-6551 — SWITCH,THERMOSTATIC

✓ Government record, cited
3M · MRO · MRO_GENERAL
PRODUCT OVERVIEW

100-6551: SWITCH,THERMOSTATIC.

The SWITCH,THERMOSTATIC is a 3M industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM, temp_rating: -30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM, outside_diameter: 2.980 INCHES MINIMUM AND 3.044 INCHES MAXIMUM IN, special_features: MODIFIED DUMMY 7.62 MM AMMO BELT W/SENSORS TO REPLICATE SIMULATED WEAPON DRILLS MM, center_hole_diameter: 2.710 INCHES MINIMUM AND 2.758 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-165-1950, 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
MRO→ MRO_GENERAL→ 100-6551
NSN: 5331-00-165-1950
NIINs: 001651950, 014382145, 014793168, 014841444
FSC: 5331 — O-ring
CAGE: 14818 — DONALDSON COMPANY, INC. (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
temp_rating-30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
outside_diameter2.980 INCHES MINIMUM AND 3.044 INCHES MAXIMUM IN
special_featuresMODIFIED DUMMY 7.62 MM AMMO BELT W/SENSORS TO REPLICATE SIMULATED WEAPON DRILLS MM
center_hole_diameter2.710 INCHES MINIMUM AND 2.758 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
operating_temp_rating300.0 FAHRENHEIT NOMINAL DEGF
cross-sectional_height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
end_item_identificationUSED ON MAG 58 SIMULATOR ASSY
media_for_which_designedGAS OR LIQUID
NSN5331-00-165-1950
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 100-6551 MFR: 3M ⚠ 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
•
TEMP RATING: -30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.980 INCHES MINIMUM AND 3.044 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 2.710 INCHES MINIMUM AND 2.758 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
TECHNICAL CHARACTERISTICS
TEMP RATING-30.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.980 INCHES MINIMUM AND 3.044 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER2.710 INCHES MINIMUM AND 2.758 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
SUBSTITUTES & CROSS-REFERENCES 10
5331PL2228023Reference document
Same NSN cross-reference
Reference document — Informative reference only
2-232V0747-75Reference document
Same NSN cross-reference
Reference document — Secondary reference
MILR83248Reference document
Same NSN cross-reference
Reference document — Secondary reference
R49388-232GReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SG-4750 PIECE 3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
Y49021-232Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 100-6551?
100-6551 is a SWITCH,THERMOSTATIC manufactured by 3M. It is classified as a MRO (MRO_GENERAL).
What parts can replace 100-6551?
There are 10 known substitutes for 100-6551: 5331PL2228023, 2-232V0747-75, MILR83248 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 100-6551?
100-6551 is cataloged in the U.S. Government catalog under NSN 5331-00-165-1950. 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.