7mm Pyrodur 104 EW 30  Internal
10mm Pyrodur 60-10 EW60  Internal
11mm Pyrodur 30-203 EW30  External
13mm Pyrodur 60-20 EW60  External
15mm Pyrostop 30-10 EI30  Internal
18mm Pyrostop 30-20 EI30  External
23mm Pyrostop 60-101 EI60  Internal
27mm Pyrostop 60-201 EI60  External