SCIENTIFIC GLASS APPARATUS CO. INC

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VACUUM TIGHT!

"HVS" (High Vacuum Seal)

JOINTS another "SGA" exclusive!

Dr. M . Schneider of the N a t i o n a l Semiconductor Corporation, Danbury, Connecticut, a manufacturer of high quality silicon semiconductor devices, is shown regulating a Gyco stopcock on " S G A " glassware which incorporates " H V S " joints. Our high vacuum seal joints solved the problem of l e a k a g e formerly experienced with conventional joints.

I

n addition to being vacuum tight, " H V S " Joints do not require any lubrication. Furthermore, since the unique design features an O-ring seal above the ground joint, you never have to worry about contamination. (The ground joint surface protects the O-ring from solvents and vapor; the tight seal prevents the atmosphere from attacking the system!) " H V S " Joints may be incorporated into any apparatus fabricated from hard borosilicate glass. They're easily assembled and disassembled. Buna-N O-rings are standard, but silicone and Vitont are available. All Inter-Joint® glassware in "SGA" Combined Catalog 63 can be supplied with " H V S " Joints at no extra charge. Ask us for details. Patent A p p l i e d For

fDuPont Trademark

SCIENTIFIC GLASS

JJ-1280X

" H V S " SPHERICAL J O I N T S . Ball member s u p p l i e d w i t h " B u n a - N " O - R i n g . Please specify c a t a l o g n u m b e r a n d size: f

No

B a l l , each Socket, each Complete f

No

B a l l , each Socket, each Complete

JJ-3755X

12/1

12/2

12/3

12/5

18/7

18/9

$2.09 2.48 4.57

$2.09 2.48 4.57

$1.76 1.98 3.74

$1.76 1.98 3.74

$1.82 2.04 3.86

$1.82 2.04 3.86

28/12

28/15

35/20

35/25

50/30

65/40

$2.09 2.31 4.40

$2.09 2.31 4.40

$2.48 2.70 5.18

$2.48 2.70 5.18

$3.85 4.24 8.09

$6.33 6.44 12.77

" H V S " T JOINTS. Inner member s u p p l i e d w i t h O - R i n g . Please specify c a t a l o g number a n d size: TNo Inner.each O u t e r , each Complete TNo

10/18

12/18

14/20

19/22

24/25

29/26

$1.50 1.70 3.20

$1.50 1.70 3.20

$1.40 1.65 3.05

$1.50 1.75 3.25

$1.60 1.85 3.45

$1.80 2.00 3.80

40/35

45/35

55/35

71/40

$2.75 3.30 6.05

$3.45 3.85 7.30

$4.50 5.10 9.60

34/28

I n n e r , each O u t e r , each Complete

"Buna-N"

$2.25 2.50 4.75

$6.15 7.00 13.15

L A B O R A T O R Y . . . • A P P A R AT U S • I N S T R U M E N T S • C H E M I C A L S • G L A S S WA R E

APPARATUS N E W J E R S E Y CO. INC Branches: Boston 16, Mass. • Elk Grove Village, III. • Fullerton, Calif. • Philadelphia 2, Pa. • Silver Spring, Md. • Syracuse 2,N.Y. B L O O M F I E L D ,

Circle No. 99 on Readers' Service Card V O L . 3 5 , N O . 6, M A Y

1963

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41

A