This adapter is to be used with the 3M 2.0 PPS Pressurized Cup System. 2.0 ADAPTER S18 3/8 FEMALE, 18 THREAD. If you are switching from the old 1.0 system to the new 2.0 system, it will require all three new parts to function; 2.0 Adapter, 2.0 Hard Cup and the 2.0 Liners kit.
Upgrade your PPS kit to the 2.0 version today! Here are the links for the additional 2.0 PPS items needed to complete the kit: PPS 2.0 Lids & Liners PPS 2.0 Cup & Collar