Tacky Tape® SM5142 BY Yellow 1/2″ x 1/8″ Vacuum Bag Sealant Tape – 25′ Roll
Tacky Tape SM5142 BY by Tacky Tape is a professional-grade vacuum bag sealant tape available in 1/2″ x 1/8″ x 25′ Roll format. Designed for use on Vacuum Bags, Composite Layup Tools, Autoclave Processing, it delivers reliable performance, long-lasting adhesion, and specialized protection across a wide range of industrial, commercial, and technical applications. Yellow in color, this product is trusted by engineers, procurement professionals, and maintenance teams worldwide who demand consistent, specification-grade tape performance in every application.
| Attribute | Detail |
|---|---|
| Manufacturer Part Number (MPN) | 51421642-BY |
| Brand | Tacky Tape |
| Product / Model Name | Tacky Tape SM5142 BY |
| Color | Yellow |
| Package Size | 1/2″ x 1/8″ x 25′ Roll |
| Product Type | Vacuum Bag Sealant Tape |
| Specification | N/A |
| Application Surfaces | Vacuum Bags, Composite Layup Tools, Autoclave Processing |
Technical Information
Tacky Tape SM5142 BY is a yellow butyl-based vacuum bag sealant tape used in composite manufacturing to create an airtight, vacuum-tight seal between the vacuum bag film and the tool surface during vacuum bagging and autoclave curing processes. The tacky, non-curing butyl compound conforms easily to irregular tool surface edges, bag folds, and parting lines to maintain full vacuum integrity throughout the cure cycle without curing or hardening. The 1/2″ x 1/8″ cross-section and 25-foot roll are standard dimensions for aerospace and marine composite production operations. The yellow color provides easy identification and visual confirmation of proper sealant placement during layup.
Why Choose Tacky Tape SM5142 BY?
- Standard Yellow Vacuum Tape — Industry-standard yellow color for composite vacuum bag sealing
- Non-Curing Butyl Formula — Remains tacky and peel-able — does not cure or harden during processing
- Airtight Vacuum Seal — Conforms to tool edges and bag folds for complete vacuum integrity
- 1/2″ x 1/8″ Standard Profile — Industry-standard cross-section for composite layup operations
- 25′ Roll Format — Production-scale length for aerospace and marine composite manufacturing
Frequently Asked Questions
Q: What is Tacky Tape SM5142 BY used for?
A: Tacky Tape SM5142 BY is used for sealing vacuum bags to tool surfaces in composite manufacturing — for prepreg autoclave curing, vacuum-assisted resin infusion (VARI), and wet layup processes requiring an airtight bag seal throughout the cure cycle.
Q: What is the MPN for Tacky Tape SM5142 BY Yellow 1/2″ x 1/8″?
A: The Manufacturer Part Number (MPN) is 51421642-BY.
Q: What temperature range does SM5142 BY vacuum sealant tape handle?
A: Tacky Tape SM5142 BY is formulated for composite autoclave curing temperatures. Consult the current Tacky Tape SM5142 datasheet for the specific maximum temperature rating suitable for your cure cycle.
Q: Does vacuum bag sealant tape leave residue on tools?
A: Quality vacuum bag sealant tapes like SM5142 BY are designed to peel cleanly from tool surfaces after curing. Adhesive residue may remain on porous tool surfaces — apply a mold release or barrier coat to tools before sealant tape application to ensure clean removal.
Q: Can Tacky Tape SM5142 BY be reused between cure cycles?
A: Vacuum bag sealant tape is a single-use consumable. The used tape is removed and discarded after each cure cycle, and fresh sealant tape is applied for each new layup to ensure a reliable, leak-free vacuum seal.
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