Part 3 of the Rotary Seals video series discusses different types of materials used in lip materials and case materials. Lip materials such as NBR, FKM, PTFE, and case materials such as Neoprene or Metal.

Part 4 discusses o-ring profiles: standard o-rings, Quad Rings®, hollow o-rings, D-rings, and more.

Part 5 discusses o-ring failure modes: why o-rings fail prematurely, compression set, and extrusion.

Part 6 continues the discussion regarding o-ring failure modes: Spiral failure, explosive decompression, abrasion, and installation damage.

Part 1 introduces the concept of surface finish - what it is, it's three main components, and what makes it important.

Part 2 discusses surface finish considerations with manufacturing processes & common irregularities.

Part 3 discusses why and how we measure surface finish, and contact vs non-contact measurement methods.

Part 4 discusses surface finish & filtering, featuring cut-off length, profiles, and profile length.

Part 5 discusses surface finish amplitude parameters; Rp, Rv, Rt, Rz1Mx, Rz, Rq, and Ra.