Bosch front caliper dust seal: Part number?

[Pilot65]

Hi, having trouble finding a suitable aftermarket seal kit for these Bosch front calipers. The outer dust boot is the problem, as I could reuse the pin seals.
These dust boots and caliper seems very special... most calipers have a groove for the seal, and the seal has a retaining lip.
But on this one the caliper has a plain bore, and the original seal has a molded-in steel ring, just like a shaft seal / zimmerring. See picture.
Anyone know of aftermarket make and model that will fit here ? See picture.
   

[oilyrag]

These appear to have a metal rim -https://www.ebay.co.uk/itm/283855693470?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D240677%26meid%3Decf060ab6cde40fc9a99df944fddb3bf%26pid%3D101195%26rk%3D2%26rkt%3D12%26sd%3D283855695864%26itm%3D283855693470%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv9PairwiseWebMskuAspectsV202110NoVariantSeedKnnRecallV1BERT&_trksid=p2047675.c101195.m1851&amdata=cksum%3A283855693470ecf060ab6cde40fc9a99df944fddb3bf%7Cenc%3AAQAHAAABQEro4ql1SUJ1li87bKftud%252BHNR6f%252BZqZvMWaqvYIq1S%252FWkIBqj9FQDQRu6mAcNzuioXWUR932%252F68tDooavd6O6QC4%252B9mDXMkqa1%252BY3CTSrEIdPFC2OOV487Mf0codAYBOUc1maciA5%252B5OJ0Go7SDYK2CmZ79Eg3EPrKoUqNjCbLOSmYFGkZ0Qk1bFcJ8DFM9QijXQlRr7TUOsIjNWIucVO3Ci2IvP4A7gG2VwubJkE8KL62uwhbPyyH4ToOgaD%252BKrrrqRFXhwvfCHaRh%252B7MkhBtyCPwu0hdHeG%252FCCrAtEdjMkpT7rE3Jy%252FehXMTkvUqSlJPUJVJEB2P2V3C%252B%252FOqZZtt04IKdNLABVIc%252BRzH0%252BbLKa8V5AHvab%252BX5cYPulQAEektOM%252B787AoOU1eZBJSNkpAF%252FwV6Krq6K6x8oxBntUx2%7Campid%3APL_CLK%7Cclp%3A2047675