Nitto p-629 Alternative — Polyken 296FR Cargo Compartment Tape

Direct specification comparison for aircraft cargo pit and cargo liner seam tape — Nitto P-629 (P629), P-629SL, P-629PRL vs. Polyken 296FR — Boeing BMS 5-146, FAR 25.853(a), FAR 25.855(d), Airbus ABD0031, Boeing NY359V52

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Polyken 296FR Flame Retardant Fiberglass Cargo Compartment Tape In Stock

Polyken 296FR

Berry Global / Covalence Specialty Adhesives — Bristol, RI

7-mil flame-retardant fiberglass cloth tape with bromide-free acrylic adhesive and LDPE film liner. Meets Boeing BMS 5-146 Rev B, Type I, Class 1, Grade A. Approved for Boeing 737, 747, 757, 767, 777 and Airbus ABD0031 cargo compartment applications. Repositionable with clean removal. Lot-specific COC with measured flammability data included.

Nitto P-629 Flame Retardant Glass Cloth Cargo Compartment Seam Tape Available · ~4 Week Lead

Nitto P-629 / SL / PRL

Nitto Denko America — made in USA

Modified-acrylic, single-coated flame-retardant glass cloth seam tape with a bright-white backing tuned to blend with Tedlar (PVF) cargo liner panels and a blue PE liner for easy application. A long-established cargo pit seam tape offered in standard (P-629), skip-slit (P-629SL), and printed skip-slit (P-629PRL) liner versions. Also meets Boeing material specification NY359V52 (Tape, Cloth, Metal Seam Sealing), used in aircraft cargo compartments such as the KC-46.

Both are flame-retardant glass cloth cargo compartment tapes meeting Boeing BMS 5-146 Type I, Class 1, Grade A and compliant with FAR 25.853(a) and 25.855(d) — the substitution is direct. Polyken 296FR matches Nitto P-629 on the core specs and pulls ahead on documentation: the newer BMS 5-146 Rev B, measured flammability values on a lot-specific COC, published ASTM E595 outgassing data, and FAR 25.856(a) radiant-heat-panel compliance. Nitto P-629 publishes a higher tensile strength (150 vs. 134 lb/in) and an adhesion-to-PVF figure — though both tapes exceed application requirements by a wide margin. Where a drawing or work order calls out Boeing NY359V52 (for example, KC-46 cargo compartments), Nitto P-629 is the tape that meets that specification.

Overall comparison score

Polyken 296FR wins

6

categories

vs.

Nitto P-629 wins

4

categories

Full specifications comparison

Property Polyken 296FR
 Nitto P-629 / SL / PRL
 Advantage
Construction
Backing Fiberglass cloth Glass cloth (bright white) Tie
Total thickness 7.0 mil (0.178mm) 6.8 mil (0.152mm) Comparable
Adhesive type Bromide-free acrylic Modified acrylic, flame retardant Bromide-free
Liner type LDPE film Blue PE film; skip-slit on SL / PRL Nitto skip-slit option
Color / print White printed or unprinted Bright white; printed liner on P-629PRL Tie
Construction type Single-coated Single-coated Tie
Physical Properties
Tensile strength 134 lb/in (234.67 N/cm) 150 lb/in (263 N/10mm) Nitto higher*
Adhesion to steel 45 oz/in (4.92 N/cm) 45 oz/in (4.91 N/10mm) Tie
Adhesion to PVF (cargo liner) Not published 35 oz/in (3.81 N/10mm) Nitto data
Elongation Not published 5% Nitto data
Weight per square yard 6.8 oz/sq yd (210 g/m²) Not published 296FR data
Operating temperature −40°F to 275°F (−40°C to 135°C) Not published 296FR data
Conformability High — curves and corners High — over contours and fasteners Tie
Abrasion resistance High — resists flagging and lifting High — "abrasion resistant, outstanding durability" Comparable
Flammability Performance
Burn length (FAR 25.853a) 0.39 in avg (3 specimens: 0.49, 0.29, 0.38) Compliant — value not published Quantified data
Flame time (FAR 25.853a) 0 seconds avg (all 3 specimens) Compliant — value not published Quantified data
Drip time (FAR 25.853a) 0 seconds avg (all 3 specimens) Compliant — value not published Quantified data
Burn through (FAR 25.855d) 0 — No penetration (all 3 specimens) Compliant — value not published Quantified data
After glow (FAR 25.855d) 0 seconds (all 3 specimens) Compliant — value not published Quantified data
Total mass loss 0.36% (ASTM E595) Not published Outgassing data
Collected VCM 0.01% (ASTM E595) Not published Outgassing data
EU bromide compliance Bromide-free adhesive Without Penta/Octa/Deca BDE per EU 2003/11/EC; antimony-trioxide-free; RoHS Both compliant
Specifications & Documentation
Boeing BMS 5-146 revision Rev B Rev A Newer rev
Boeing NY359V52 (Tape, Cloth, Metal Seam Sealing — e.g. KC-46 cargo compartment) Not listed Meets NY359V52 Nitto P-629
Airbus ABD0031 Para 7.3.2 & 7.4 (product line) Para 7.3.2 & 7.4 — base P-629 only Line-wide
FAR 25.856(a) Radiant Heat Panel Listed Not listed Polyken 296FR
Boeing SL approvals 737, 747, 757, 767, 777 listed individually Not individually listed Polyken 296FR
Standard sizes 1", 2", 3", 4" × 36 yd 50, 75, 100mm × 33m (≈2", 3", 4" × 36yd) Comparable
Lot-specific COC Yes — included with test data Not standard on datasheet Polyken 296FR
Warranty Per Berry Global terms 6 months; replacement or credit only Comparable
Country of origin USA USA Tie

*Both tapes' tensile strength is far in excess of what cargo seam sealing requires; the difference is not a practical performance limitation for either product.

Flammability test data — actual measured values (Polyken 296FR)

FAR 25.853(a) — Vertical Burn

Burn length (avg)0.39 in

Flame time (avg)0 sec

Drip time (avg)0 sec

Nitto P-629Compliant only

FAR requirement: burn ≤8.0 in, flame ≤15 sec, drip <5 sec

FAR 25.855(d) — 45° Burn Test

Burn through (avg)0 — No penetration

Flame time (avg)0 sec

After glow (avg)0 sec

Nitto P-629Compliant only

FAR requirement: no penetration, flame ≤1 sec, after glow ≤1 sec

Outgassing — ASTM E595

Total mass loss0.36%

Collected VCM0.01%

Nitto P-629Not published

Relevant for sealed cabin environments and sensitive equipment

Certifications & approvals

Polyken 296FR

✓Boeing BMS 5-146 Rev B — Type I, Class 1, Grade A (lot COC included)

✓FAA FAR 25.853(a) — Vertical burn 0.39 in avg

✓FAA FAR 25.855(d) — 45° burn, no penetration

✓FAA FAR 25.856(a) — Radiant Heat Panel vs. P-629

✓Airbus ABD0031 — Para 7.3.2 & 7.4 (product line)

✓Boeing 737-SL-25-085-B

✓Boeing 737-SL-25-115-B

✓Boeing 747-SL-25-195-B

✓Boeing 767-SL-25-112-B

✓Boeing 777-SL-25-037-B

✓Bromide-free adhesive — EU compliant

✓ASTM E595 outgassing data published

–Boeing NY359V52 — not listed

Nitto P-629 / SL / PRL

✓Boeing BMS 5-146 Rev A — Type I, Class 1, Grade A (all variants)

✓Boeing NY359V52 — Tape, Cloth, Metal Seam Sealing (e.g. KC-46 cargo compartment) vs. 296FR

✓FAA FAR 25.853(a) — compliant (all variants)

✓FAA FAR 25.855(d) — compliant (all variants)

✓Airbus ABD0031 — Para 7.3.2 & 7.4 (base P-629 only)

–FAR 25.856(a) — not listed

–Boeing SL approvals — not individually listed

✓Without Penta/Octa/Deca BDE per EU 2003/11/EC

✓Antimony-trioxide-free; RoHS compliant

–ASTM E595 outgassing — not published

Where each product wins

Polyken 296FR advantages

  • Qualified to the newer Boeing BMS 5-146 Rev B — Nitto datasheet lists Rev A
  • Fully quantified flammability on a lot COC: 0.39 in burn length, 0-sec flame time, 0 drips, no burn through, 0-sec after glow — Nitto publishes compliance only
  • ASTM E595 outgassing data published (0.36% TML, 0.01% VCM) — not on the Nitto datasheet
  • FAR 25.856(a) Radiant Heat Panel listed — Nitto P-629 does not list this
  • Five Boeing SL approvals individually listed (737, 747, 757, 767, 777)
  • Airbus ABD0031 across the product line; Nitto's ABD0031 covers the base P-629 only
  • Bromide-free acrylic adhesive; published −40°F to 275°F operating range
  • Lot-specific Certificate of Compliance included with every order

Nitto P-629 advantages

  • Meets Boeing material specification NY359V52 (Tape, Cloth, Metal Seam Sealing), used in cargo compartments such as the KC-46
  • Higher published tensile strength — 150 lb/in vs. 134 lb/in (both far exceed application needs)
  • Publishes adhesion to PVF (35 oz/in) — the directly relevant value for Tedlar cargo liner work
  • Bright-white backing tuned to blend with Tedlar (PVF) liner panels for an appearance-matched seam
  • Three liner options off the shelf: standard, skip-slit (SL), printed skip-slit (PRL)
  • Long-established product, broadly stocked and familiar across aerospace MRO

Which tape to specify

If your requirement is… Specify Reason
Documented flammability values — not just compliance Polyken 296FR
 Lot COC carries measured burn length, flame time, drip, burn through, after glow
Boeing BMS 5-146 Rev B specifically Polyken 296FR
 296FR lists Rev B; Nitto datasheet lists Rev A
ASTM E595 outgassing data required Polyken 296FR
 0.36% TML, 0.01% VCM published; not on Nitto datasheet
FAR 25.856(a) Radiant Heat Panel compliance Polyken 296FR
 Listed on 296FR; not listed on Nitto P-629
Lot-specific COC required with every order Polyken 296FR
 COC with test data included standard
Boeing NY359V52 called out (e.g. KC-46 cargo compartment) Nitto P-629
 P-629 meets NY359V52 (Tape, Cloth, Metal Seam Sealing); 296FR does not list it
Maximum published tensile strength Nitto P-629
 150 lb/in vs. 134 lb/in (both well above requirement)
Published adhesion-to-PVF figure on file Nitto P-629
 35 oz/in to PVF published; 296FR publishes adhesion to steel only
Appearance-matched seam on Tedlar (PVF) panels Nitto P-629
 Bright-white backing tuned to blend with PVF liner panels
Skip-slit or printed liner for fast field application Nitto SL / PRL
 Skip-slit and printed-liner versions stocked; 296FR uses standard LDPE liner

Polyken 296FR data from Berry Global product data sheet and lot Certificate of Compliance. Nitto P-629 data from Nitto Denko America TDS, Doc Code PDS-P-629-9-13 (Sep 2015). Always verify current approval status against the specification revision in force at time of purchase.

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