This commonly referred to as gasket growth which happens during the spring and summer months when the humidity is high. Every company has this issue and the simplest way to fix this is to microwave the gaskets for 20-40 seconds to boil the water from the gasket. We are also working on trying limit the growth issue with different forms of packaging the gaskets.
Air testing metal rings is an acceptable practice in many cases, while other types of sealing rings require oil to push and hold the sealing ring out into the bore. You can fill the apply passage with oil and the apply air pressure that way and it should give you your desired results.
Due the complaints throughout the industry of the front seal blow issue on this transmission family, SAP developed this metal clad, Viton rubber lip seal to ensure the highest quality product in the industry for our customers.
This seal is designed to fit the following units: AODE, 4R70W, 4R75E/W, E4OD, 4R100, 5R110W.
Our kits are developed by transmission builders, that understand what it takes to make an overhaul kit complete.
Because we handle a large quantity of OE product the vendor does this to ensure the part is not returned through factory warranty channels should there be an issue.
The updates that are included in our product line are proven corrections for specific problems that often carry the endorsement of ATSG and or ATRA. They are add to kits to give the builder the most complete product to do his job.
If the sun shell you are using has the name “PARKER” or “SAP” on it, you are then assured of having a true BEAST!
SAP is always testing and updating materials to improve internal hydraulic sealing of the transmission, as well as following OE guidelines on changes.
SAP strives to stay current on all OE gasket changes, and when there is a running change we incorporate those changes.