Steele RV ramp-gate seal kits: ribbed hollow bulb versus half-round double tabs

Quick answer: Two specific Steele ramp-gate kit listings can be compared side by side, but a further issuer-listed kit (90-3327-283) exists; the two examples below are not an exhaustive inventory and no interchange is established. 90-3326-283 is described by Steele as a ribbed hollow bulb kit; 90-3328-283 is a large hollow half-round with double tabs kit. The component listings differ, even though both include a 35 ft length and a corner piece. A kit description does not certify the fit of your trailer. [ST1][ST2]

The checkable difference

These are part numbers taken from the two manufacturer product-page component lists, not inferred from an unrelated trailer-brand catalog. Both manufacturer pages also list a scraper tool, a named adhesive product and an instruction sheet as kit contents. The presence of adhesive in the package is not a blanket instruction to apply it to any coating or substrate. Likewise, 35 ft is the supplied seal length, not a measurement of every ramp gate perimeter. [ST1][ST2]

First identify the original sealing arrangement

Photograph the ramp gate fully secured in its ordinary parked condition, without standing beneath or manipulating a suspended door. In a controlled and safe accessible location, record the perimeter seal's visible end-on silhouette: does it have a central hollow bulb with ribs, or a broader half-round profile with two projecting tabs? Also note whether you can see a separate corner block and the shape of the existing mounting surface. A crushed or torn strip can disguise its original section—mark the profile uncertain if the end view is unclear.

Make three non-destructive records:

1. Context image: trailer make/model/year if reliably known, ramp-gate side viewed from a safe, secured position, and exact edge under inspection.
2. Section and receiver: exposed undamaged profile near an accessible edge with a ruler, showing attachment method, where it contacts the frame and whether a separate trim or retainer is present.
3. Kit evidence: photographs of original packaging, sales invoice, supplier receipt or any printed 90-/70-series number. Distinguish the number on the actual kit from a search-result guess.

For the measurement sheet, record the visible seal run on each side, the exposed landing width, any intact seal sample’s uncompressed height/base shape where safe, and the number and shape of corners. Keep measurements in inches or millimetres consistently. If the edge is under load, damaged, electrified or inaccessible, do not obtain the measurement yourself.

What to ask before ordering

Send the two candidate kit numbers and the section photos to Steele or the trailer maker. Ask: “Which original ramp-gate perimeter section did my exact trailer construction use? Does the kit drawing match my existing receiver and corners? Is there an approved revision-specific fit list and adhesive/surface-preparation instruction? How much length and how many corner details are needed?” A vendor confirmation for that construction is more useful than an online description saying the kit fits “many” trailers.

If the supplier cannot identify the original section, keep both kits unconfirmed. Do not replace a double-tab seal with a ribbed bulb, cut a safety stop, improvise latch adjustment, or rely on adhesive from an unrelated product. This guide contains no ramp-lift, spring, cable, hinge, latch or load-bearing mechanism procedure. For any mechanism concern, contact an appropriate RV service professional.

Manufacturer source notes and limits

• [ST1] Steele Rubber Products, Ramp Gate Kit – Ribbed Hollow Bulb Weatherstrip, kit 90-3326-283, undated live manufacturer product page checked 2026-10-12, Overview > Description > “This Kit is composed of the following parts” (main seal 70-3677-265, corner 70-3907-97): https://www.steelerubber.com/ramp-gate-kit-ribbed-bulb-90-3326-283
• [ST2] Steele Rubber Products, Ramp Gate Kit – Large Hollow Half Round w/Double Tabs, kit 90-3328-283, undated live manufacturer product page checked 2026-10-12, Overview > Description > component list (main seal 70-3802-283, corner 70-3907-97): https://www.steelerubber.com/ramp-gate-kit-half-round-tabs-90-3328-283
• Supplemental research locator—not relied upon for unverified dimensions: Steele RV catalog PDF steele_rv_catalog_5_1_25_web.pdf, PDF p. 16 / printed p. 14, Ramp-Gate Kits sketch, reported in R06 research; exact catalog edition beyond filename and diagram geometry must be reverified before any extra claim is added: https://www.steelerubber.com/assets/site/docs/steele_rv_catalog_5_1_25_web.pdf

Revision-sensitive kit-number worksheet

Do not compress several catalog eras into an alleged supersession. Copy the precise source that supplied each number:

If a receipt or old instruction names 70-3907-207, do not silently substitute 70-3907-97. Send the maker both the year/revision and photo of the original corner; request a documented replacement or compatibility determination. The presence of a third issuer kit is precisely why “there are only two ramp-gate kits” would be an unsafe reading of the narrower side-by-side table above.

A ready-to-send measurement and identity record

Stop condition: If the gate does not latch as designed, or the old seal appears integral to a hinge, cable, spring or gate-lift mechanism, do not treat this as a weatherstrip comparison task. Escalate to the trailer maker or an appropriate service provider.