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Technical Data Sheet
PartsTable / COMPONENT / 26566GRADE2
26566GRADE2 ✓ 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

The TUBING,NONMETALLIC is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC TUBE, flexibility: FLEXIBLE, inside_diameter: 0.500 INCHES NOMINAL IN, outside_diameter: 0.875 INCHES NOMINAL IN, inside_surface_condition: SMOOTH, media_for_which_designed: FUEL/OIL, HYDROCARBON SINGLE RESPONSE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-233-0082, 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
26566GRADE2
NSN: 4720-00-233-0082
FSC: 4720
CAGE: 80049 — DEPARTMENT OF THE AIR FORCE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
flexibilityFLEXIBLE
inside_diameter0.500 INCHES NOMINAL IN
outside_diameter0.875 INCHES NOMINAL IN
inside_surface_conditionSMOOTH
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
minimum_tensile_strength1500 POUNDS PER SQUARE INCH LBS
cross-sectional_shape_styleROUND
measuring_method_and_length25.000 INCHES NOMINAL OVERALL IN
nondefinitive_spec/std_data2 CLASS AND 40 GRADE AND A TYPE
nonmetallic_hardness_rating55.0 MINIMUM SHORE DUROMETER A AND 65.0 MAXIMUM SHORE DUROMETER A
specification/standard_data81349-MIL-R-6855 GOVERNMENT SPECIFICATION
NSN4720-00-233-0082
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 26566GRADE2 · 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
•
SPECIFICATION/STANDARD DATA: 81349-MIL-R-6855 GOVERNMENT SPECIFICATION
•
FLEXIBILITY: FLEXIBLE
•
INSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
MATERIAL: RUBBER SYNTHETIC TUBE
•
NONMETALLIC HARDNESS RATING: 55.0 MINIMUM SHORE DUROMETER A AND 65.0 MAXIMUM SHORE DUROMETER A
•
INSIDE SURFACE CONDITION: SMOOTH
•
OUTER COVERING ENVIRONMENTAL PROTECTION: OIL RESISTANT
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81349-MIL-R-6855 GOVERNMENT SPECIFICATION
FLEXIBILITYFLEXIBLE
INSIDE DIAMETER0.500 INCHES NOMINAL IN
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
MATERIALRUBBER SYNTHETIC TUBE
NONMETALLIC HARDNESS RATING55.0 MINIMUM SHORE DUROMETER A AND 65.0 MAXIMUM SHORE DUROMETER A
INSIDE SURFACE CONDITIONSMOOTH
OUTER COVERING ENVIRONMENTAL PROTECTIONOIL RESISTANT
MINIMUM TENSILE STRENGTH1500 POUNDS PER SQUARE INCH LBS
CROSS-SECTIONAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
MIL-PRF-6855/4Interchangeable
interchangeable cross-reference
interchangeable
26566GRADE2Interchangeable
interchangeable cross-reference
interchangeable
M6855/4-10H207Interchangeable
interchangeable cross-reference
interchangeable
AMS3220Interchangeable
interchangeable cross-reference
interchangeable
9M55-1AInterchangeable
interchangeable cross-reference
interchangeable
292570Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 26566GRADE2?
26566GRADE2 is a TUBING,NONMETALLIC.
What parts can replace 26566GRADE2?
There are 8 known substitutes for 26566GRADE2: MIL-PRF-6855/4, 26566GRADE2, M6855/4-10H207 and 5 more. Substitute compatibility should be verified for your specific system.
Is 26566GRADE2 still available?
26566GRADE2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026