5/8" H x 3/4" W reinforced EPDM sponge rubber side bulb push-on seal. Dense rubber channel with double inner lips and flexible core for uniform radius installations. No adhesive required. Fits flanges 3/16"–1/4". Ideal for late 90s Fleetwood models and 2009 Fleetwood Pulse 24D basement compartments. Black, 15 ft pre-cut strip.
The Steele Rubber Products 90-3728-277 is a 5/8" Side Bulb Push-On Weatherstrip — a reinforced EPDM sponge rubber seal designed for RV access doors and storage compartment door applications. Unlike adhesive-backed weatherstrips, this seal requires no glue or tape: simply press the channel over the door flange for a tight, secure fit that protects the compartment from wind, dust, water, and debris.
The channel section is made of dense rubber with double inner lips that grip the flange firmly once pressed into place, resisting pull-off while allowing clean removal if replacement is ever needed. The flexible core allows the seal to bend and follow curved corners and contoured door openings for easy, uniform radius installations without kinking. The sponge rubber side bulb compresses when the door closes, creating a positive compression seal along the full door perimeter.
This profile is ideal for late 90s Fleetwood models and the 2009 Fleetwood Pulse 24D basement utility compartments, as well as a wide range of Class A basement compartment doors. It fits flanges from 3/16" to 1/4" thick — the heavier sheet metal flanges common on larger RV compartment frames. The EPDM rubber construction ensures long-term durability through UV, ozone, and harsh weather without fading, shrinking, or cracking.
Dense rubber channel with double inner lips grips the flange firmly once pressed on — secure hold that resists pull-off
Flexible core bends to follow curved corners and contoured openings for easy, uniform radius installations
Push-on installation — simply press onto the door flange for a tight compression fit with no glue, tape, or surface prep needed
Reinforced sponge rubber construction — highly weather and wear resistant, will not fade, shrink, or crack
This seal is designed to fit flanges 3/16" to 1/4" thick. Measure your existing door flange before ordering to confirm compatibility. Flanges outside this range — thinner than 3/16" or thicker than 1/4" — may not grip securely or may not seat properly on the flange. Installation Tip: Press the channel firmly over the flange by hand, working from one corner along the full door perimeter. The flexible core will bend to follow curves and rounded corners. Trim to length with scissors or a sharp utility knife for a clean fit.
Primary Part Number: 90-3728-277 Steele Rubber Profile: 70-3582-277 Known RV Fitment (not exhaustive): • Fleetwood — late 90s models, storage and compartment doors • Fleetwood Pulse 24D (2009) — basement utility compartment doors • Class A motorhomes — basement storage compartment doors Available Lengths (Same Profile): • 15 ft — Part 90-3728-277 (This Item) • Also available by the foot for custom lengths Note: Compatibility is not guaranteed. Always verify your flange thickness (3/16"–1/4") and confirm fit against your specific model before purchasing.
What You Need: No adhesive required. Recommended supplies: tape measure, scissors or utility knife. Basic Installation Steps: 1. Verify Flange Thickness: Confirm your door flange measures between 3/16" and 1/4" thick — the seal will not grip properly on flanges outside this range 2. Remove Old Seal: Pull the existing weatherstrip off the flange; remove any residual material from the flange edge 3. Measure & Cut: Measure the door opening perimeter and cut the seal to length with scissors or a utility knife 4. Press Onto Flange: Starting at one corner, press the channel firmly over the flange edge by hand, working along the full door perimeter — the double inner lips will grip the flange securely 5. Follow Curves: Use the flexibility of the core to guide the seal around curved corners and contoured sections without kinking 6. Test the Closure: Close the compartment door to confirm the side bulb compresses evenly and creates a consistent, gap-free seal around the full perimeter
Included: • One (1) 90-3728-277 Side Bulb Push-On Weatherstrip • 15-foot pre-cut strip • Reinforced EPDM sponge rubber, 5/8" H x 3/4" W side bulb profile • Dense rubber channel with double inner lips and flexible core NOT Included: • Tape measure, scissors or utility knife
Both options share the same 5/8" H x 3/4" W reinforced EPDM sponge rubber side bulb profile with flexible core and double inner lip channel. Shipped in one continuous piece when ordered by the foot. Order the option that best matches your project length to minimize waste.