Skip to Content

Custom Reference Standards

  1. Products
  2. Chromatography
  3. Gas Chromatography
  4. Vials and Closures
  5. Closures

Closures

Closures​

Guaranteed Compatibility with Agilent, Varian, Shimadzu, PerkinElmer, and More.

Extra-Long-Life
Multipliers & Filaments

Manufactured
in the USA

Increase Instrument
Uptime

Industry-Leading
Linearity

Used by OEMs in
Premium Instruments

Late Order
Cutoff Time
2026 Variant Price List
Sort By: Featured

Closures

9mm R.A.M.™ Smooth Cap, Black, PTFE/Butyl Rubber Lined, 1000/pk
Item number 4250-5394F09
$ 197.00 197.0 USD
9mm R.A.M.™ Smooth Cap, Black, PTFE Lined, 1000/pk
Item number 4250-5391F09
$ 168.00 168.0 USD
9mm R.A.M.™ Orange, Ribbed Polypropylene Open Hole Cap, 1000/pk
Item number 4250-531009FO
$ 54.00 54.0 USD
9mm R.A.M.™ Green, Ribbed Polypropylene Open Hole Cap, 1000/pk
Item number 4250-531009FG
$ 54.00 54.0 USD
9mm R.A.M.™ Pink, Ribbed Polypropylene Open Hole Cap, 1000/pk
Item number 4250-531009FPK
$ 54.00 54.0 USD
9mm R.A.M.™ Smooth Cap, Royal Blue, PTFE/Silicone Lined with Cross Slit, 1000/pk
Item number 4250-5395XF09RB
$ 419.00 419.0 USD
9mm R.A.M.™ Ribbed Cap, Royal Blue, PTFE/Silicone Lined with Y Cut, 1000/pk
Item number 4250-537109FRB
$ 313.00 313.0 USD
9mm R.A.M.™ Ribbed Cap, Natural, PTFE/Butyl Rubber Lined, 1000/pk
Item number 4250-539409FN
$ 197.00 197.0 USD
9mm R.A.M.™ Ribbed Cap, Royal Blue, Bonded, Clear PTFE/Blue Silicone w/Slit, Ultra Low Bleed - Mass Spec, 1000/pk
Item number 4250-5397U109FRB
$ 393.00 393.0 USD
9mm R.A.M.™ Ribbed Cap, Royal Blue, Bonded PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-5397109FRB
$ 370.00 370.0 USD
9mm Solid Top R.A.M.™, Ribbed Yellow Polypropylene Cap Unlined, 1000/pk
Item number 4250-532009Y
$ 53.00 53.0 USD
9mm R.A.M.™ Ribbed Cap, Royal Blue, PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-539709FRB
$ 356.00 356.0 USD
9mm R.A.M.™ Ribbed Cap, Black, Black Viton® Lined, 1000/pk
Item number 4250-539909F
$ 585.00 585.0 USD
9mm R.A.M.™ Smooth Cap, Royal Blue, Bonded, Clear PTFE/Blue Silicone w/Slit, Ultra Low Bleed - Mass Spec, 1000/pk
Item number 4250-5397U1F09RB
$ 393.00 393.0 USD
9mm R.A.M.™ Smooth Cap, Royal Blue, PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-5397F09RB
$ 306.00 306.0 USD
9mm R.A.M.™ Smooth Cap, Natural, PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-5397F09N
$ 306.00 306.0 USD
9mm R.A.M.™ Smooth Cap, Royal Blue, Bonded PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-53971F09RB
$ 370.00 370.0 USD
9mm R.A.M.™ Smooth Cap, Pink, Bonded PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-53971F09PK
$ 370.00 370.0 USD
9mm R.A.M.™ Smooth Cap, Orange, Bonded PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-53971F09O
$ 370.00 370.0 USD
9mm R.A.M.™ Smooth Cap, Natural, Bonded PTFE/Silicone with Slit Lined, 1000/pk
Item number 4250-53971F09N
$ 370.00 370.0 USD