GRADED SEALS

To overcome the differences in thermal expansion coefficients, we have manufactured graded seals to bridge the difference by using a series of intermediate sealing glasses between the two working ends.

	RQPGS

QUARTZ TO PYREX

Nominal	Nominal	Nominal	Nominal
Tubing	Tubing	Length	Overall
Bore	O/D	Quartz	Length	Ref.
mm	mm	mm	mm	No.
4	6	50	150	RQPGS/4
6	8	50	150	RQPGS/6
8	10	50	150	RQPGS/8
10	12	50	150	RQPGS/10
15	18	50	150	RQPGS/15
20	23	75	160	RQPGS/20
25	28	75	160	RQPGS/25
30	33	75	160	RQPGS/30
35	38	75	160	RQPGS/35
40	44	75	160	RQPGS/40
45	49	100	200	RQPGS/45
50	54	100	200	RQPGS/50
55	59	100	200	RQPGS/55
65	69	100	200	RQPGS/65
75	79	100	200	RQPGS/75

Intermediate diameters are charged to the next size up. Optical Windows can be sealed to the ends of Graded Seals if required, prices on request.