Standard Graded Seals
Standard Graded Seals
Standard Graded Seals - all dimensions in mm
Nominal Tube Nominal Tube Nominal Length Nominal Overall Quartz to
O/D I/D of Quartz Length Borosillicate
Cat.Ref.
4 2 50 150 QBGS/4
6 4 50 150 QBGS/6
8 6 50 150 QBGS/8
10 8 50 150 QBGS/10
12 10 50 150 QBGS/12
14 12 50 150 QBGS/14
16 13 50 150 QBGS/16
18 15 50 150 QBGS/18
20 17 75 160 QBGS/20
25 22 75 160 QBGS/25
30 27 75 160 QBGS/30
35 32 75 160 QBGS/35
40 36 75 160 QBGS/40
45 41 75 160 QBGS/45
50 46 75 160 QBGS/50
Other sizes, wall thicknesses or lengths available upon request.
Intermediate sizes are priced to next size up, larger diameters can be priced upon request.
Due to the difference in the coefficient of expansion between quartz and borosillicate glasses they will not bond together. QB Glass' graded seals 'bridge' the gap between these materials giving a strong bond.