Document OJJy4eba46w7D9pyGv2KVyroM

M Q J C __ T H IS D O C U M E N T IS F H P R O P fc R T Y O F ,, I- D U P O N T D C N E M O U R S A N D C O M P A N Y T H E T E C H N IC A L . IN F O R M A T IO N HEREON M A V N O T HE U S E D NO R REPRO DUCED W IT H O U T TH E P E R M IS S IO N O F D U PO N T. GASKETS GASKET CODES GASKETS ANO PACKINGS ENGINEERING STANDARD ISSU&U MAY 1947 TW(< PASK ASvtSCO APRfl 1970 U2A Pag# 1 of 2 1. SCOPE This standard describes Du Pont coded stuskets in Tables 1.2. and 3. Obsolete codes are identified in Table 4. \ccepiable materials and vendors for Du Pont Codes are listed in Specification S(.'2A. Refer to Standard L 5A for assistance in gasket selection. 2. GENERA! 2.1 The prefix or initial letter of this code designates the general classification; ie, "C" for gaskets and "S" for gasket material in sheet form. The second part of the code, it an arbitrary designation for identification. 2-2 The following ASTM rubber designations are used in Tables l and t. OR Neoprene EPDM ElhUette props lene terpolymer elastomer (.Nordel) N8R N'R SBR .Nitrile butadiene rubber Natural rubber Styrene butadiene rubber Caution--On drawings specifying Du Pont Code num bers, reference should be made to Sl'2A which can be sent to Du Pont contractors to show acceptable materials and vendors for each Code number. Oo not usa U2A as a rafaranea on drawings. TABLE 1 - SHEET AMD CUT GASKET CODES Ou Pont Cod* S-l S -2 S-3 S-4 S-6 S-7 S-9 G-r G-2 G-3 G-4 G-6 G-7 G-3 G-9 S -10 S-11 S --12 S- 14 S-20 S-35 S -- 40 S --45 S-49F S - 50 G- 10 G- 11 G- 12 G- 14 G - 20 G-35' G-40 G-45 G-49F G - 50 Description Gray SBR bonded compressed white asbestos Black SBR bonded compressed white asbestos Brown 30 Durometer, NR gum rubber Red 75 Durometer, NR or SBR rubber Black 50 Duromtr, acid-re*iifant filler, NR or S8R rubber Whit* SBR coated, wire inserted, woven-asbestos cloth Folded and formed S - 7 Compressed Blue-African asbestos, Buna S bonded, acid-resisting fillers Black 35 Durometer, CR neoprene Black 60 Durometer, CR neoprene Black 75 Durometer, CR neoprene Compressed plant fiber Black 70 Durometer, EPDM Nordel 8 Whit* 55 Durometer, CR neoprene Black NBR bonded eomprtssod w'hito acbattos Black 60 Durometer, NBR rubber Teflon^TFE, calcium fluoride filler Whit* "Teflon" TFE Max Tamp c F 400 1 750 400 i 75C 125 | 250 125 | 250 125 1 25C 325 i 6C0 325 1 6C0 230 450 , - 150 3C0 150 1 3CO 150 1 3C0 100 2C0 175 350 150 3C0 400 750 125 250 300 550 300 550 DUP 0372280 DU 000419