High-quality EPDM sponge rubber half-round extrusion seal with skirted 3M Peel-N-Stick adhesive for RV access entry doors, compartment doors, and hatches. Will not shrink, crack, or fade. Commonly found on Jayco Seismic, North Point, Pinnacle, Octane, Jay Feather, Hummingbird, Jay Flight, White Hawk, Eagle, and Eagle HT, plus Winnebago Micro Minnie, Voyage, Minnie, and Spyder. Hand crafted and made in USA.
The Steele Rubber Products 90-3478-377 is a medium hollow half-round peel-and-stick EPDM sponge rubber extrusion seal engineered for weather-resistant protection on RV access entry doors, exterior compartment doors, and hatches. At 3/8" high by 11/16" wide, this medium profile provides a meaningful step up in sealing contact area over small half-round profiles, making it well-suited for the wider door frames and higher-traffic access doors found on Jayco and Winnebago travel trailers, fifth wheels, and toy haulers. The hollow core compresses evenly under door closing force and springs back to maintain consistent contact across the full door perimeter.
The exclusive skirted Peel-N-Stick design adds protective flanges on both sides of the adhesive tape base. These flanges hide the tape edges entirely, shield them from moisture and debris, and close the gap behind the seal edge where dirt and water can accumulate on standard weatherstrips — the leading cause of premature adhesive failure. Installation is entirely tool-free: clean and dry the door frame surface, peel the liner a few inches at a time, and press firmly into place. The 15 ft continuous strip is well-matched to one or two access door perimeters. Also available in 30 ft and by the foot, and backed by Steele Rubber Products’ 100% Satisfaction Guarantee.
3/8" H x 11/16" W profile compresses evenly against access entry and compartment door frames for consistent full-perimeter sealing
Protective flanges on both sides shield tape edges from moisture and debris — delivering a clean finished look and long-lasting grip
EPDM sponge rubber maintains its profile, flexibility, and black color through years of outdoor use and temperature cycling
Hand crafted by Steele Rubber Products from premium EPDM sponge rubber with a 100% Satisfaction Guarantee
This medium hollow half-round seal is commonly found on the following Jayco models: Jayco Seismic — Fifth wheel toy hauler; access entry doors and storage compartment doors Jayco North Point — Fifth wheel; access entry doors and storage compartment doors Jayco Pinnacle — Fifth wheel; access entry doors and storage compartment doors Jayco Octane — Toy hauler; access entry doors and storage compartment doors Jayco Jay Feather — Travel trailer; access entry doors Jayco Hummingbird — Travel trailer; access entry doors Jayco Jay Flight — Travel trailer; access entry doors and compartment doors Jayco White Hawk — Travel trailer; access entry doors Jayco Eagle — Travel trailer; access entry doors and compartment doors Jayco Eagle HT — Travel trailer; access entry doors and compartment doors Also commonly found on the following Winnebago models: Winnebago Micro Minnie — Travel trailer; access entry doors Winnebago Voyage — Travel trailer; access entry doors Winnebago Minnie — Travel trailer; access entry doors Winnebago Spyder — Toy hauler; access entry doors This profile is also commonly found on Airstream, Fleetwood, Forest River, Keystone, and Thor RV models. Compatibility is not guaranteed. Always verify that the 3/8" H x 11/16" W profile and mounting surface width match your application before ordering. Actual fit may vary by model year and manufacturing variation.
The bonding surface must be completely clean and dry before applying the seal. • Remove all old seals, adhesive residue, and debris using a general-purpose adhesive cleaner or rubbing alcohol • Allow the surface to dry completely — applying over wet cleaner prevents adhesion • Apply within the recommended temperature range: 60–104°F (15–40°C) • Minimize the temperature difference between the seal and the bonding surface • The 3M adhesive bonds immediately on contact — do not remove all backing at once; work a few inches at a time For full perimeter applications on access or compartment doors, apply a small amount of cyanoacrylate adhesive (super glue for rubber) at end-to-end corner joints to prevent lifting. Allow 72 hours for full adhesion strength before heavy weather exposure.
Step-by-Step Installation: 1. Remove Old Seal: Pull the existing weatherstrip from the door frame, working around the full perimeter 2. Clean the Surface: Remove all old adhesive, residue, and debris using adhesive cleaner or rubbing alcohol 3. Dry Completely: Allow the bonding surface to dry fully before proceeding 4. Check Temperature: Confirm both the seal and bonding surface are between 60–104°F (15–40°C) 5. Cut to Length: Measure and cut the strip to fit each door section using a sharp utility knife or scissors 6. Peel & Apply: Remove the backing a few inches at a time — do not remove all backing at once 7. Press Firmly: Apply steady, even pressure along the full length as you go 8. Corner Joints: Apply a small amount of cyanoacrylate (super glue for rubber) at end-to-end corner joints for full perimeter seals 9. Allow to Cure: Seal bonds immediately on contact; allow 72 hours for full adhesion strength
In The Package: • One (1) continuous 15 ft strip of 90-3478-377 Peel-N-Stick Medium Hollow Half Round RV Seal • 3M adhesive backing pre-applied and protected by release liner Recommended Supplies (Not Included): • Adhesive cleaner or isopropyl rubbing alcohol for surface preparation • Disposable rags or shop towels • Steele Rubber Scraper/Tuck Tool (optional, aids clean installation) • Cyanoacrylate adhesive (super glue for rubber) for corner end-to-end bonding on full perimeter installations • Sharp utility knife or scissors for cutting seal to length
Unlike standard adhesive-backed seals where the tape runs exposed along the base edges, the skirted design adds protective rubber flanges on both sides. This delivers three specific performance advantages: 1. Clean, Finished Look: The skirting flanges cover the adhesive tape edge entirely, leaving a smooth rubber surface visible on both sides of the installed seal with no exposed tape or unsightly gaps 2. Adhesive Tape Protection: The flanges physically shield the sides of the 3M tape from moisture, road debris, and cleaning chemicals — the leading causes of tape edge lifting on standard weatherstrips 3. Debris and Moisture Elimination: The skirting closes the gap behind the seal edge, preventing water and dirt from accumulating between the seal base and the door frame where it can undermine adhesion over time
The skirted Peel-N-Stick design addresses the single most common failure mode of standard foam weatherstrips — tape edge lifting caused by moisture and debris infiltration at the unprotected adhesive edges. By building protective rubber flanges directly into the extrusion profile, Steele Rubber Products delivers a more durable, better-looking, and longer-lasting installation on RV access entry doors and compartment door frames across a wide range of Jayco, Winnebago, and other major RV brands.