GS#424 MIL-S-11030F Polysulfide Tape 1/2 x 1-1/2 x 50 – 12/Case for Structural Assembly

General Sealants GS#424 in the 1/2 x 1-1/2 inch x 50 foot roll, available 12 rolls per case, provides the widest pre-formed polysulfide sealant tape format in the GS#424 range, designed for large faying surface sealing applications where maximum tape width coverage is required in a single pass. The 12-case format supports production environments with high sealant tape consumption on large structural assemblies.

The 1-1/2 inch tape width efficiently covers wide overlap joints, large structural mating surfaces, and extensive faying areas in a single tape application, dramatically reducing the time required to apply sealant to large joint areas compared to narrower tape variants. The 1/2 inch thickness provides a substantial pre-formed sealant reservoir for wide joints requiring more sealant volume.

Meeting MIL-S-11030F Type III specification, GS#424 wide tape delivers the same qualified polysulfide sealing performance as all variants in the range, in the dimensional configuration required for large-scale structural aerospace assembly operations.

Technical Information

The wide 1-1/2 inch tape format is engineered for structural faying surface applications involving large overlap areas typical of primary structure assembly on commercial transport aircraft. The substantial 1/2 inch pre-formed thickness provides the sealant volume needed to fill wide joints and produce adequate squeeze-out at joint edges after fastener installation and final assembly torque, confirming complete sealant coverage across the full joint width.

The polysulfide chemistry of GS#424 provides the excellent fuel resistance, flexibility, and long-term durability required for structural aerospace sealing applications. After cure, the sealant remains flexible and maintains adhesion through the thermal cycling, pressurization cycles, and mechanical loading experienced by aircraft primary structure over thousands of flight cycles and many years of service.

Case quantity of 12 rolls provides uninterrupted material supply for extended production runs or large structural maintenance events. Storage of unused rolls per General Sealants shelf life recommendations ensures full polysulfide performance is maintained across the full case quantity.

Why Choose GS#424 Wide Tape 12-Case?

• ✅ MIL-S-11030F Type III Qualified — Aerospace spec polysulfide sealing
• ✅ 1-1/2 Inch Wide Format — Single-pass coverage of large structural joints
• ✅ 12-Case Economy — Cost-efficient for large production operations
• ✅ Consistent Thickness — Uniform sealant volume for predictable joint geometry
• ✅ No Mixing Required — Pre-formed tape eliminates mixing errors

Frequently Asked Questions

Q: What is the MPN for GS#424 1/2 x 1-1/2 x 50 case?
A: MPN is GS424YPEII-1-2X1-1-2X50. 12 rolls per case.

Q: Why would I choose the 1-1/2 inch wide tape over narrower options?
A: The 1-1/2 inch wide tape covers more joint area per pass, reducing application time on large structural faying surfaces. It is selected when the joint design requires wider sealant coverage in a single tape application.

Q: Does GS#424 wide tape require an adhesion promoter?
A: Yes. Apply the appropriate adhesion promoter and follow the MIL-S-11030F surface preparation requirements before tape application for specification-compliant, long-lasting sealant joint performance.

Q: How many rolls are in a case?
A: 12 rolls of 1/2 x 1-1/2 x 50 foot GS#424 tape per case.

Q: Is GS#424 pre-formed tape interchangeable with gun-applied polysulfide sealant?
A: Both use polysulfide chemistry and meet MIL-S-11030F specification. The tape provides consistent pre-measured thickness and eliminates mixing, while gun-applied sealant allows more complex bead profiles. Selection depends on joint design and production process requirements.