Beware of recent phishing e-mails. Use our official contact addresses only.

Springs for Thermo/Finnigan MAT Mass Specs

Thermo/Finnigan 4500 Retainer springs
Hover over image to zoom



The lens retainer spring (Finnigan #40005-20160), spring detent (Finnigan #40005-20220), ion volume spring (Finnigan #40005-20170) and solid inlet springs (Finnigan #10007-20030), for Finnigan 4500 & 4600's are manufactured by S.I.S. and made from tungsten wire. This gives them much more spring than those supplied by Finnigan.

Spring for Finnigan MAT MS
Part No. Description Quantity
In Stock
LRS1 Lens Retainer Spring (Finnigan #40005-20160) DISCONTINUED------
SPRDT Spring Detent (Finnigan #40005-20220) DISCONTINUED------
FP8 Solids Inlet Spring (Finnigan #10007-20030) DISCONTINUED------
FP9 Ion Volume Spring (Finnigan #40005-20170) 0Standard lead-time for non-stock items is approximately two weeks depending on the item. CALL
Popular Items also Purchased
  • Viton® Composition O-RingsViton® Composition O-Rings
    O-Rings are available in five different materials from Scientific Instrument Services.
  • O-Ring KitsO-Ring Kits
    This convenient o-ring kit contains 30 of the most popular sizes, for a total of 380 o-rings, in one convenient kit.
  • O Rings for VG Mass SpectrometersO Rings for VG Mass Spectrometers
    Viton® O-Rings in many sizes.
  • Blank Flanges in Brass, Aluminum and StainlessBlank Flanges in Brass, Aluminum and Stainless
    In Brass and Aluminum and Stainless
  • Other Ceramic InsulatorsOther Ceramic Insulators
    A variety of alumina insulators. Call for custom sizes
  • Ceramic Insulators for Fisons/VGCeramic Insulators for Fisons/VG
    Replacement insulators for your VG mass spec
  • O Rings for Thermo/Finnigan Mass SpecsO Rings for Thermo/Finnigan Mass Specs
    all types and sizes of O-Rings