30' Mylar Black Tape 1.25" x .188" - Truck Toppers, Body Side Rails, Trailers & RVs
Black #30 Mylar tape for sealing, cushioning, vibration dampening, and sound deadening on compatible truck toppers, body side rails, trailers, RVs, and similar clean, dry light-duty substrates.
Key Measurements & Specs
| Specification | Detail |
|---|---|
| Part Number / SKU | TM125B |
| Product Type | #30 Mylar body rail / sealing tape |
| Color | Black |
| Width | 1.25" |
| Thickness | .188" / approximately 3/16" |
| Length Included | 30' section |
| Material | Durable polyvinyl chloride (PVC) with polyester film backing |
| Adhesive | Standard G1 emulsion acrylic adhesive |
Fitment / Application
| Category | Details |
|---|---|
| Common Applications | Truck toppers, body side rails, trailers, RVs, and similar sealing or cushioning applications |
| Primary Fit | Use where 1.25" wide x .188" thick tape is required |
| Surface Requirement | Best applied to clean, dry, light-duty substrates |
| Fitment Method | Verify tape width, thickness, length requirement, surface condition, and compression area before ordering |
| Important Note | Application fit depends on the surface, required seal thickness, and compression area. Verify before installation. |
Top Features
| Feature | Buyer Benefit |
|---|---|
| PVC Construction | Formulated for durable service life in sealing and cushioning applications |
| Compressible Seal | Helps seal out air, condensation, light, and dust when properly compressed |
| Vibration Dampening | Provides cushioning, vibration dampening, and sound deadening between contact surfaces |
| Flexible Application | Conforms to irregular surfaces and curves when applied to a suitable clean, dry surface |
Overview
This listing is for one 30' section of black #30 Mylar tape, part number TM125B. The tape measures 1.25" wide x .188" thick and is commonly used on truck toppers, body side rails, trailers, RVs, and similar applications where a compressible sealing, cushioning, or dampening strip is needed.
R&P Service Insight
Before installing body rail tape, confirm that the surface is clean, dry, and free of loose debris, old adhesive, wax, oil, or moisture. Proper prep helps the adhesive bond and allows the tape to compress evenly.
- Measure First: Confirm that 1.25" width and .188" / 3/16" thickness match the gap or rail surface you are sealing.
- Surface Prep: Clean and dry the application area before installing the tape.
- Compression Fit: This tape is designed to seal when compressed between compatible surfaces.
R&P Knowledge Hub
Compatibility: Compatible with applications requiring black 1.25" wide x .188" thick body rail, topper, trailer, or RV sealing tape. Verify measurements before ordering.
Vehicle / System Fit: Commonly used for truck toppers, body side rails, trailer body contact points, RV applications, and general cushioning or sealing use where the tape dimensions match.
Installation Notes: Apply to clean, dry surfaces. Confirm that the tape can compress properly without bunching, folding, or interfering with panel fit.
Performance Insight: The PVC body and polyester film backing provide dimensional stability, while the adhesive backing supports light-duty bonding to suitable prepared surfaces.
Brand & Fitment Note
Selling Brand: R&P Carriages
Application Reference: Truck topper, body side rail, trailer, and RV references describe common application types only.
What This Means: This listing is for one 30' section of black #30 Mylar tape, part number TM125B. It is not listed as a vehicle-specific OEM-branded item.
Before Ordering: Verify tape width, thickness, length requirement, surface material, surface condition, and compression fit before installation.
R&P Repair Insight
When replacing old body rail or topper tape, remove worn material completely before installing the new section. Uneven old adhesive or dirt can reduce contact and prevent the new tape from sealing evenly.
- Check Old Tape Size: Match the existing tape width and compressed thickness before replacing.
- Check Rail Contact: Make sure the rail or mounting surface contacts the tape evenly across the full length.
- Check Environment: Avoid installing over moisture, dust, grease, oil, or loose paint.
Features
Durable PVC Construction
Formulated from durable polyvinyl chloride for long service life in compatible sealing and cushioning applications.
Seals When Compressed
Helps seal out air, condensation, light, and dust when compressed between properly prepared contact surfaces.
Cushioning & Sound Dampening
Provides cushioning, vibration dampening, and sound deadening between topper rails, body surfaces, trailer surfaces, and similar contact points.
Dimensional Stability
Cast onto a 2 mil polyester film to provide dimensional stability and supplied as a self-wound product.
G1 Acrylic Adhesive
Uses standard G1 emulsion acrylic adhesive for light-duty substrates that are clean and dry.
Flexible Surface Conformity
Conforms to irregular surfaces and curves, helping support a better fit across compatible application areas.
Resistant Material Properties
Inherently resistant to fire, ultraviolet rays, most chemicals, acids, and solvents.
30' Working Length
Includes one 30' section for topper rails, body side rails, trailer, RV, and general body sealing applications where the dimensions match.
Included Components
| Quantity | Item |
|---|---|
| 1 | 30' section of black #30 Mylar tape, 1.25" wide x .188" thick |
| Not Included | Installation tools, cleaners, primers, hardware, or additional adhesive products |
