It sounds like you're probably looking for the Rubber Lube Plug - Fits 1.18" Lubed Dust Cap - Qty 1 # DC-RP, which is just slightly bigger than 1"; you'll want to measure your opening with a digital calipers like the # PTW80157 to confirm this would work.
If you find a different measurement let me know and I'm happy to see what else might work for you. I've also linked all of the available rubber bearing caps that you can have a look at, as well. view full answer...
For your 2014 DRV Mobile Suites, you can use the Kodiak Ceramic Brake Pads # K250CP. These brake pads will work for calipers rated 7,000-8,000-lbs. view full answer...