Vendors for parts

Ionization Chamber material

Modern Plastics

Source of Ertalyt and G10/FR4 plastic sheets

Address: 676 Howard Ave, Bridgeport, CT, 06605-0574

Phone: (203) 333-3128 / (800) 243-9696

sales reps: Vicky Rivera vrivera@modernplastics.com

Some previously used materials:

Ertalyte, PET NAT PET-P Plate natural

G10/FR4

Rohacell

was a company at Degussa.com

now it is called evonik http://www.evonik.com/en/index.html

http://www.degussa.com/degussa/en/products/productdatabase/default.htm?action=details&page=1&pid=1974&rno=1

http://www.rohacell.com/en/performanceplastics8344.html

Phone # 870 234 0286

The rohacell below was very thick and sturdy. Perhaps it can make a good lightweight chamber. It is not conducting so be carful of charge up effects. Rohacell 110 WF , CMS 01, Rev. G. Type 4 Grade B

Gas Gaskets

Marco Rubber

Marco Rubber & Plastic Products, Inc. 334 Clark Street North Andover, MA 01845 USA Telephone: 800-775-6525 Fax: 978-688-6915

Gasket Cord: part# CB1000-2.36 ; a 2.36 outer diameter O-ring cord which wee can use to make O-rings. The O-grin groove should be 1.77 mm deep and you can use superglue to joing the ends of the cord.

Specifications

Compound# Color Hardness Shore A Tensile Mpa (Psi) Elongation % 22Hr C/S @ 100C Low Temp High Temp B1000 Black 70 15.0 (2,150) 400 10 –40°C(–40°F) 120°C(248°F)

• Buna-N is available in a wide range of Durometers and Colors,

Calculating the gaskets min radius of curvature

R= CE/S( inches)

where , R= radius of curvature in inches C= 1/2 the thickness of the material E= modulus of elasticity S= maximum fiber stress of yield stress of the material

Example for Buna-N

C = 2.36 mm/2 E= Elongation/Tensile = 4/2150 (1/psi) S =