Consumables & expendables · Spec-Crosswalk

MIL-R-6855 Class 1 Grade 40 Form SHEET

MIL MIL-R-6855 · 1 · 40 · SHEET

No qualified-products (QPL / ASSIST) export loaded for this specification yet — members below come from codification and manufacturer sources; QPL membership lands with the data cycle.

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Other lines of MIL MIL-R-6855

The same document's other types, classes and grades — each its own crosswalk family.

MIL-R-6855 187 qualified products
MIL-R-6855 Type A Class 2 Grade 60 104 qualified products
MIL-R-6855 Class 1 Grade 60 Form SHEET 43 qualified products
MIL-R-6855 Type A Class 2 Grade 50 24 qualified products
MIL-R-6855 Class 2 Grade 60 15 qualified products
MIL-R-6855 Type A Class 2 Grade 80 14 qualified products
MIL-R-6855 Type B Class 2 Grade 60 Form SHEET 11 qualified products
MIL-R-6855 Type A Class 2 Grade 30 10 qualified products
MIL-R-6855 Class 3 Grade 60 9 qualified products
MIL-R-6855 Class 2 Grade 40 8 qualified products
MIL-R-6855 Type A Class 2 Grade 70 8 qualified products
MIL-R-6855 Class 3 Grade 40 6 qualified products

30 members, grouped by the makers' own part-number structure — open a family to see its graded, cited rows.

1M140 BRP MANUFACTURING CO

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-523-9806 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

1M140-0125-36 BRP MANUFACTURING CO

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-523-9806 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

53-60252-21 — 4 members

53-60252-21 DERCO AEROSPACE, INC.

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-183-0227 →	MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855, CLASS 1, GRADE 40, FORM SHEET MIL SPEC SINGLE MATERIAL RESPONSE

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

53-60252-21 THE BOEING COMPANY

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-183-0227 →	MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855, CLASS 1, GRADE 40, FORM SHEET MIL SPEC SINGLE MATERIAL RESPONSE

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

53-60252-21 KITCO LLC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-183-0227 →	MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855, CLASS 1, GRADE 40, FORM SHEET MIL SPEC SINGLE MATERIAL RESPONSE

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

53-60252-21 ASSOCIATED AIRCRAFT MANUFACTURING &

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-183-0227 →	MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855, CLASS 1, GRADE 40, FORM SHEET MIL SPEC SINGLE MATERIAL RESPONSE

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

8635988 U S ARMY ARMAMENT RESEARCH &

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9750 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.250 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

8635990 U S ARMY ARMAMENT RESEARCH &

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9747 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

8635994 U S ARMY ARMAMENT RESEARCH &

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9741 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.062 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

8635996 U S ARMY ARMAMENT RESEARCH &

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9739 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

10150424 NIMIKKEISTOKESKUS NCB FINLAND

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9747 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

AMS-R-6855 CL 1, GR 40 SOCIETY OF AUTOMOTIVE ENGINEERS INC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-202-1318 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.015 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

AMS3209MR125 SOCIETY OF AUTOMOTIVE ENGINEERS INC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-523-9806 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

BMS1-14 THE BOEING COMPANY

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9741 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.062 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

M6855/1-020427 — 3 members

M6855/1-020427 SAE INTERNATIONAL

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-202-1318 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.015 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

M6855/1-020427 SOCIETY OF AUTOMOTIVE ENGINEERS INC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-202-1318 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.015 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

M6855/1-020427 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-202-1318 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.015 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

M6855/1-021227 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9741 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.062 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

M6855/1-022011 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-389-8569 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

M6855/1-023227 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9750 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.250 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

M6855/1-023257 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-01-322-3208 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

M6855/1-026423 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-810-7581 →	WIDTH: 18.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.880 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

M6855/1A-026423 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-810-7581 →	WIDTH: 18.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.880 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-08

MIL-PRF-6855/1 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-021-2803 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 48.000 INCHES NOMINAL THICKNESS: 0.125 INCHES NOMINAL MATERIAL: RUBBER CHLOROPRENE CLASS CR LOCATION NOT OTHERWISE SPECIFIED
NSN 9320-00-052-1444 →	WIDTH: 18.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.187 INCHES NOMINAL MATERIAL: RUBBER CHLOROPRENE CLASS CR LOCATION NOT OTHERWISE SPECIFIED
NSN 9320-00-074-3105 →	WIDTH: 36.000 INCHES NOMINAL THICKNESS: 0.125 INCHES NOMINAL COLOR: BLACK BOTH SIDES MATERIAL: RUBBER CHLOROPRENE CLASS CR LOCATION NOT OTHERWISE SPECIFIED
NSN 9320-00-102-6775 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.156 INCHES NOMINAL MATERIAL: RUBBER CHLOROPRENE CLASS CR LOCATION NOT OTHERWISE SPECIFIED
NSN 9320-00-143-4820 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 48.000 INCHES NOMINAL THICKNESS: 0.094 INCHES NOMINAL MATERIAL: RUBBER CHLOROPRENE CLASS CR LOCATION NOT OTHERWISE SPECIFIED
NSN 9320-00-180-3247 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 24.000 INCHES NOMINAL THICKNESS: 0.312 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

+162 more NSNs held — contact atas.aero for a breakdown

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

MIL-PRF-6855F CL I TYP A GR 40 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9747 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

MILR6855 CL1 GR40 FMSHT MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9739 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

MILR6855CL1TYBGR40-0-19 MILITARY SPECIFICATIONS

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9747 →	no stated characteristics

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

NA2-4043 THE BOEING COMPANY

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-202-1631 →	no stated characteristics
NSN 9330-01-361-7458 →	no stated characteristics
NSN 9330-01-397-2802 →	no stated characteristics
NSN 9330-01-397-2803 →	no stated characteristics
NSN 9330-01-422-9101 →	no stated characteristics
NSN 9330-01-422-9104 →	no stated characteristics

+375 more NSNs held — contact atas.aero for a breakdown

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

P5021-1-4 KIRKHILL INC

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9741 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.062 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

P5021-1-4 LOCKHEED MARTIN CORPORATION

CONFIRMED

Codified interchangeability (FLIS I&S)

NSN 9320-00-241-9741 →	WIDTH: 36.000 INCHES NOMINAL LENGTH: 36.000 INCHES NOMINAL THICKNESS: 0.062 INCHES NOMINAL MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED

FLIS · DLA Logistics Information Services (FLIS) · 2026-07

Watch this family. We’ll alert you when its restriction status changes or a new qualified alternative lands.

Staying inside the regulation — routes from candidate to approved

Codification and qualification say who vouches for a part — they are not installation eligibility. Under EASA Part-21, eligibility flows from the approved design (type design / IPC) or an approved change; under Part-145, acceptance needs an EASA Form 1 or, for genuine standard parts, conformity traceable to the officially recognised standard (145.A.42).

Classify the part. Is it a GENUINE standard part? If the IPC/CMM references only a public specification (AN/MS/NAS/SAE-AS/ISO/EN) with no OEM source-control drawing, buy at source with conformity traceable to that standard.
Check for an approved alternate. The IPC/CMM/vendor list may already carry an alternate part number or vendor code — an already-approved alternate needs no new approval.
Ask the design approval holder. Request the source-control data, written equivalence, or addition of the alternative source to the approved data. Document a refusal.
Raise a design change. Via a Part-21J DOA (or EASA/ADOA): a 21.A.95 minor change adding the alternate to the approved data, backed by an identicality/equivalence file — dimensions, material, class, load rating, lubricant/seal, corrosion protection, acceptance criteria. Critical applications escalate to major change/STC.
FAA-PMA / BASA path. Where the product is also FAA-certificated: PMA parts reach EASA aircraft under the BASA/TIP (non-critical directly; critical via EASA-validated STC).
Production, release, traceability. Approved parts are produced under a POA, released on an EASA Form 1 (marked EPA where applicable), with EN/AS 9120-grade traceability into Part-145/CAMO acceptance.

Stage 1(a): we assemble the equivalence/identicality starter file — the cited evidence this graph holds, shaped for your DOA or compliance department to take forward. See pricing.

Regulatory explainer, not legal advice: paragraph numbers, derogations and the BASA/TIP revision change — verify against the current consolidated Regulation (EU) 748/2012, the EASA Easy Access Rules and the current TIP, and engage your DOA and competent authority early.

This crosswalk identifies candidate equivalents with cited evidence. It is not an airworthiness approval. Substitution decisions remain subject to your organisation’s procurement and engineering approval process and the governing maintenance data (AMM/CMM/SRM/CML/OMAT).