This is the Agilent Varian NHS32, NHS-32 in. (ASA 35 in.) Diffusion Pump O-Ring Kit. O-Ring Kit Contains: 1 Butyl inlet flange O-ring, ASA 35 inch 1 Foreline flange O-ring, ASA 6 inch 8 Viton fill and drain O-rings 4 Viton O-rings 1 Sight glass O-ring 1 Graphite sight glass gasket

This is the Agilent Varian NHS-35 Diffusion Pump, Inlet O-Ring for ASA 35 in. ASA Nominal value.

This is the Agilent Varian NHS-35 Diffusion Pump LF ISO 200K foreline outlet O-Ring.

This is a replacement Oil Drain Plug. Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the oil drain plug see figure #7 (diagram exploded view & parts illustration) below.

This is a replacement Oil Sight Glass Service Kit. Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the sight glass kit see item #7 on (diagram exploded view & parts illustration) below. For pumps built before OCT. 1995.

This is an Agilent Varian replacement graphite gasket for the oil sight glass on HS-20, HS-32, and HS35 diffusion pumps. For location of the sight glass on the pump see item #7 on (diagram exploded view & parts illustration) below. For pumps built after OCT. 1995.

This is the Agilent Varian NHS-35 Diffusion Pump Heat Shield.

This is a replacement heater insulation blanket. Fits the Agilent Varian NHS-35 Diffusion Pump. 3 pieces Cerablanket, 0.50 inch thick. For location of the insulation blanket see item #13 (diagram exploded view & parts illustration) below.

This is a replacement upper thermal (water) switch. Fits the Agilent Varian NHS-35 Diffusion Pump. Set at 200º F, 93º C. For location of the upper thermal switch see figure #8 (diagram exploded view & parts illustration) below.

This is a replacement lower thermal (boiler) switch. Fits the Agilent Varian NHS-35 Diffusion Pump. Set at 600º F, 316º C. For location of the upper thermal switch see figure #9 (diagram exploded view & parts illustration) below.

These are bolts to attach ASA Gate Valves to ASA Diffusion pumps, ASA sizes 6, 8 and 10 inch. One each, size 3/4-10 1-1/4" Length Hex Bolt - Course Thread.

This is a replacement heater element no leads, 240/480V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. (Used on pumps built before May 1990) For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

This is a replacement heater element with leads, 240/480V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

This is a replacement heater element with leads, 240/480V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

This is a replacement heater element with leads, 400V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)

This is a replacement heater element with leads, 440V, 4000 W. (1 each) Fits the Agilent Varian NHS-35 Diffusion Pump. For location of the heater element see item #11 (diagram exploded view & parts illustration) below. (6 required per pump)