Adapters when you need them
A common means of retrofitting a wiper to a cylinder without modifying the gland, is to use an adapter of machined keeper plate.
For all A-Series (MS28776-M2 or AN) interchangeable wipers, the Hydrowype Adapter kit is available comprising a keeper plate and follower plate pair, to secure the wiper outboard of the cylinder end-cap or gland. This includes the Style-AI for metric rod wipers which allows the use of a wiper with a metric bore to be installed in an imperial "Style-AD" adapter.
A Keeper plate generally refers to a custom machined plate that fits over the end of the gland and may or may not include the use of a backing "follower" plate. In the case of either an adapter or keeper plate, the wiper is housed entirely outboard of the gland, with the retaining device usually being bolted to the face of the gland. For Gadjets Adapters, any pattern of bolt holes can be supplied.
These adapters are provided in plated or coated sheet formed metal, complete with the necessary profile to effectively retain the wiper.