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Technical Data Sheet
PartsTable / COMPONENT / 3271-4391
3271-4391 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: RUBBER SYNTHETIC TUBE, temp_rating: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF, inside_diameter: 0.750 INCHES NOMINAL IN, outside_diameter: 0.856 INCHES NOMINAL IN, operating_pressure: 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, burst_test_pressure: 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-017-0797, 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
3271-4391
NSN: 4720-00-017-0797
FSC: 4720
CAGE: 24161 — GATES CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
temp_rating250.0 FAHRENHEIT SINGLE RESPONSE DEGF
inside_diameter0.750 INCHES NOMINAL IN
outside_diameter0.856 INCHES NOMINAL IN
operating_pressure50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
burst_test_pressure200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
inside_surface_conditionSMOOTH
media_for_which_designedALCOHOL, METHYL AND ETHYLENE GLYCOL AND WATER, FRESH AND FUEL/OIL, HYDROCARBON SINGLE RESPONSE
cross-sectional_shape_styleROUND
nondefinitive_spec/std_dataD2 CLASS
specification/standard_data81343-SAE 20R3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
layer_composition_and_location1ST LAYER SPIRALLY LAID COTTON CORD AND OUTER LAYER MOLDED RUBBER, SYNTHETIC
NSN4720-00-017-0797
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 3271-4391 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BURST TEST PRESSURE: 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
•
TEMP RATING: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
MEDIA FOR WHICH DESIGNED: ALCOHOL, METHYL AND ETHYLENE GLYCOL AND WATER, FRESH AND FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
NONDEFINITIVE SPEC/STD DATA: D2 CLASS
•
OPERATING PRESSURE: 50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SPECIFICATION/STANDARD DATA: 81343-SAE 20R3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
OUTER COVERING ENVIRONMENTAL PROTECTION: ETHYLENE GLYCOL RESISTANT AND HEAT RESISTANT AND OZONE RESISTANT
•
INSIDE SURFACE CONDITION: SMOOTH
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
BURST TEST PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
TEMP RATING250.0 FAHRENHEIT SINGLE RESPONSE DEGF
MEDIA FOR WHICH DESIGNEDALCOHOL, METHYL AND ETHYLENE GLYCOL AND WATER, FRESH AND FUEL/OIL, HYDROCARBON SINGLE RESPONSE
NONDEFINITIVE SPEC/STD DATAD2 CLASS
OPERATING PRESSURE50.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SPECIFICATION/STANDARD DATA81343-SAE 20R3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
OUTER COVERING ENVIRONMENTAL PROTECTIONETHYLENE GLYCOL RESISTANT AND HEAT RESISTANT AND OZONE RESISTANT
INSIDE SURFACE CONDITIONSMOOTH
MATERIALRUBBER SYNTHETIC TUBE
OUTSIDE DIAMETER0.856 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
KN-56-03Interchangeable
interchangeable cross-reference
interchangeable
TRU-2807Interchangeable
interchangeable cross-reference
interchangeable
6435Interchangeable
interchangeable cross-reference
interchangeable
258802Interchangeable
interchangeable cross-reference
interchangeable
457221Interchangeable
interchangeable cross-reference
interchangeable
X552AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3271-4391?
3271-4391 is a CAPACITOR,VARIABLE,AIR DIELECTRI.
What parts can replace 3271-4391?
There are 24 known substitutes for 3271-4391: KN-56-03, TRU-2807, 6435 and 21 more. Substitute compatibility should be verified for your specific system.
Is 3271-4391 still available?
3271-4391 is currently cancelled.
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Last verified: July 2026