Please note - Silmid will be closed on Monday 5th May 2025 for the Early Spring Bank Holiday. We will reopen as usual on Tuesday, 6th May 2025. Thank you for your continued support.
3M AC-251 B-1/2 Aerospace Sealant
3M AC-251 Class B-2 Aerospace Sealant was a two-part, quick curing, polysulfide based canopy and windshield sealant. 3M have rationalised their sealant offering, and this product is no longer available. We do continue to offer sealants from 3M Aerospace, as well as Naftoseal and PPG Aerospace.