Waste Caps – S51 Threads

VICI Jour SKU: JR-S-15103

Number of Ports: 4 total (3) 1/4-28 (1) optional
Thread of 4th port: 1/2-20 for 1/4" tubing (1/4" nut, ferrule, and plug included)
Quote Only


To comply with waste handling regulations and prevent evaporation of volatile compounds, S51 waste caps fit all bottles or canisters with S51 thread. They have three ports with ¼-28 thread for 1/8" or 1/16" tubing and a fourth port with your choice of threads.

S51 waste caps seal the container with an O-ring behind a PTFE lip, so the O-ring is therefore not a wetted part. Unused ports should be closed with plugs.

A bottom-sealing barbed adapter to connect 4, 6, or 8 mm ID tubing can be ordered separately.

A VICI Jour waste cap package Includes:

  • 1 cap, S51 thread
  • 1 O-ring
  • 1 set: 1/16" nut/ferrule/color-sleeve adapter
  • 2 sets: 1/8" nut/ferrule/color-sleeve adapter

Caps with 1/2-20 thread also include:

  • 1 1/2-20 plug
  • 1 1/2-20 nut for 1/4" tubing
  • 1 1/2-20 collapsible ferrule for 1/4" tubing

NOTE: One port must be reserved for the exhaust filter or the Safety Air Inlet Valves with Filters.

Tech Tip

With some restrictions, S51/S61 caps fit on DIN50/DIN60 bottles or canisters.

M10 x 1 or 1/2-20

Part Material
Closure Polypropylene
Insert PTFE
O-ring NBR
Ferrules ETFE/CTFE
Barbed adapter PA/PP

More information about the chemical resistance of these materials:

Chemical Resistance

See also:

Color-Sleeve Adapters

Exhaust Filters

Safety Air Inlet Valves with Filters

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