Looking for Replacement Slide Out Seals for 2020 Heartland Mallard IDM251BH
Updated 01/20/2026 | Published 12/03/2025
Question:
I need to replace the slide-out seals on my 2020 Heartland Mallard IDM251BH. Heatland told me they dont have info on the model, and I need to source all parts from a third party. So here I am. I have images if it helps.
asked by: Greg C
Expert Reply:
Hey Greg, yeah replacement parts for RVs is like that unfortunately. There just isn't the same type of database available for replacement parts like vehicles have. So for seals your best option is to identify the type and size of your slide out seals and then from there we can see what you'd need as generally there are only a few different types.
I attached a link on this page that has all of the seals we have but you can also email me back with the pictures you mentioned and I'll take a look.
Product Page this Question was Asked From
Rubber Bulb Seal for RV Slide Out - 1" C-Channel - 15' Long x 7/8" Tall
- RV Slide Out Parts
- Seals
- Bulb Seal
- Channel Mount
- 1 Inch Wide
- 15 Feet Long
- Black
- Steele Rubber
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: seals
- Video: All You Need to Know About the Rubber Bulb Seal for RV Slide Out
- Video: The Low-Down on the Alpha Systems 1021 Self-Leveling Sealant for RVs
- Video: Review of Specialty Recreation RV Skylight - Universal Inner Garnish - SR48MR
- Shop: Rubber Bulb Seal for RV Slide Out - 1-3/16" C-Channel - 15' Long x 1-3/16" Tall
- Shop: Rubber Bulb Seal for RV Slide Out - 1" C-Channel - 60' Long x 7/8" Tall
- Shop: Alpha Systems 1021 Self-Leveling Sealant for RVs - White - 10.3 oz - Qty 1
- Shop: Rubber Bulb Seal for RV Slide Out - 3/16" Track Mounted - 30' x 1" Tall
- Shop: Rubber Bulb Seal for RV Slide Out - 1-1/8" C-Channel - 15' Long x 15/16" Tall
- Shop: Specialty Recreation Inner Garnish for RV Skylight 14" Wide x 22" Long - Frost
- Shop: Rubber Bulb Seal With Fins for RV Slide Out - 1" C-Channel - 15' Long x 1-1/8" Tall
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Q&A: Best Suspension Upgrade for 33" Tandem Axles: Road Armor vs Dexter EZ Flex for Ember 22ETS
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer tires and wheels
- Video: How to Choose a Trailer Brake Controller
- Shop: Suspension Enhancement
- Search Results: trailer jack
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Availability of Heat Strip or Heat Pump for Furrion Chill Cube RV AC
- Q&A: Recommended Replacement For An Atwood GC6AA-10E Water Heater
- Search Results: rv air conditioners
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Brake Controller
- Q&A: Trailer Hub Wont Slide Onto the Spindle of a Timbren Axle-Less System
- Search Results: trailer wiring
on RV Slide Out Parts
Jameson C.
12/29/2025
Hey Greg, did you get a chance to identify the type and size of your slide-out seals for the Mallard? Once you had that info, were you able to find a good match from the options on the page? Your update could make it easier for others replacing their RV seals too.