I ended up buying the wiper seals directly from Steele.
But bought the D seals from Amazon.
Spent a couple days measuring what was on the rig and the tech drawings from both AP and Steele. They appear to be interchangeable.
You can only buy the AP wiper seal in 35 foot lengths, so that would mean wasting 27 ft. So the Steele buy the foot eliminates waste.
But 50 ft of AP EKD seal is almost $65 less than buy the foot from Steele.
If for some reason the D seal doesn't fit, it's amazon prime so I can return it.
TV 2007 Chevy 2500 Long Box Vortec 8.1/Allison or 2016 Tundra Crew Max 5.7L 4x4
2022 Freedom Express 192RBS
Equalizer 4 way WDH, Prodigy 3 BC
USAF Retired
WAR EAGLE