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STYLE R FOR USE WITH MALE & FEMALE AND TONGUE & GROOVE ASME B16.5 & BS 1560 FLANGES Standard Style R gaskets embody Special Style R gaskets are adaptable to non-standard flanges and can be all the exclusive features of Flexitallic designed and manufactured according to specifications for high and low pressure design for keeping compression applications and for severe corrosive conditions. values in balance with bolting and When ordering special Style R gaskets for non-standard flanges and for special providing adequate resilience applications, furnish complete data on Flexitalllc Gasket Engineering Data Form. to compensate for variable stresses encountered in service. Standard NOTE - The following Style R gaskets are interchangeable: Style R gaskets are manufactured to a nominal thickness of .125" Style R-1 and R-3 gaskets (3.2mm). Optimum compression 1/4" sizes - Classes 150, 300,400 and 600 are is in the range of .090" to .100" interchangeable. (2.3mm to 2.5mm) thick. 1/2" sizes - Classes 150,300,400,600,900, 1500 There are three types of Style R gaskets: and 2500 (R-3 only) are interchangeable. (a) Style R-1 indicates gaskets for use with large male and female flanges.*A ll R-1 and R-3 gaskets in Classes 300, 400 and 600 (b) Style R-3 indicates gaskets for use with large tongue and groove flanges.are interchangeable within their size category. (c) Style R-4 indicates gaskets for use with small All R-1 and R-3 gaskets in Classes 900 and 1500 are tongue and groove flanges. interchangeable within their size category. *As a general rule, the use of Flexitallic Spiral-Wound Gaskets with small male and female flange facings is not recommended. Style R-4 gaskets 1 1/2" sizes - interchangeable with all NPS /2" R-1 and R-3 gaskets within the Dimensional limitations established by the proportions of the small tongue and same pressure rating. groove facings limit the possibility of increasing gasket dimensions to improve 3 the load carrying capacity in the higher pressure series. For this reason, it is3/4" interchangeable with all /4" R-1 and R-3 gaskets suggested that large tongue and groove facings be selected for new constructionwithin the same pressure rating. when class 900, 1500 and 2500 flanges are to be used. Style R-4 gasketsAll R-4 gaskets in Classes 300 through 2500 are maybe compressed an additional amount when exposed to the higher bolt loads,interchangeable within their size category. but not to the degree that the gasket will be crushed due to the radial support provided by the confining groove. Style R1 for Large Male and Female Style R3 for Large Tongue and GrooveStyle R4 for Small Tongue and Groove TABLE Nominal Sealing Element Sealing Element Sealing Element Sealing Element 14 Pipe Class 150-150O Class 2500 Class 150-2500 Class 150-2500 Size ID OD ID OD ID OD ID OD 1/ 1 1 4 /2 12.7 1 25.4 � � � -� /2 12.7 1 25.4 � � � � 1/ 3 13 3 3 3 2 1 25.4 1 /8 34.9 /16 20.6 1 /8 34.9 1 25.4 1 /8 34.9 1 25.4 1 /8 34.9 3/ 5 11 1 11 5 11 5 11 4 1 /16 33.3 1 /16 42.9 1 /16 27.0 1 /16 42.9 1 /16 33.3 1 /16 42.9 1 /16 33.3 1 /16 42.9 1 11/ 1 1 1 7 2 38.1 2 50.8 1 /4 31.8 2 50.8 1 /2 38.1 2 50.8 1 /2 38.1 1 /8 47.6 11/ 7 1 5 1 7 1 7 1 4 1 /8 47.6 2 /2 63.5 1 /8 41.3 2 /2 63.5 1 /8 47.6 2 /2 63.5 1 /8 47.6 2 /4 57.2 11/ 1 7 7 7 1 7 1 1 2 2 /8 54.0 2 /8 73.0 1 /8 47.6 2 /8 73.0 2 /8 54.0 2 /8 73.0 2 /8 54.0 2 /2 63.5 2 27/ 5 3 5 7 5 7 1 8 73.0 3 /8 91.1 2 /8 60.3 3 /8 92.1 2 /8 73.0 3 /8 92.1 2 /8 73.0 3 /4 82.6 21/ 3 1 1 3 1 3 3 2 3 /8 85.7 4 /8 104.8 3 76.2 4 /8 104.8 3 /8 85.7 4 /8 104.8 3 /8 85.7 3 /4 95.3 3 41/ 3 1 1 5 4 108.0 5 127.0 3 /4 95.3 5 127.0 4 /4 108.0 5 127.0 4 /4 108.0 4 /8 117.5 31/ 3 1 3 1 3 1 2 4 /4 120.7 5 /2 139.7 � � � � 4 /4 120.7 5 /2 139.7 4 /4 120.7 5 /8 130.2 4 53/ 3 3 3 3 3 3 11 16 131.8 6 /16 157.2 4 /4 120.7 6 /16 157.2 5 /16 131.8 6 /16 157.2 5 /16 131.8 5 /16 144.5 41/ 11 3 11 3 2 5 /16 144.5 6 /4 171.5 � � � � 5 /16 144.5 6 /4 171.5 � � � - 5 65/ 5 3 5 5 5 5 13 16 160.3 7 /16 185.7 5 /4 146.1 7 /16 185.7 6 /16 160.3 7 /16 185.7 6 /16 160.3 6 /16 173.0 6 71/ 1 3 1 1 1 1 2 190.5 8 /2 215.9 6 /4 171.5 8 /2 215.9 7 /2 190.5 8 /2 215.9 7 /2 190.5 8 203.2 8 93/ 5 3 5 3 5 3 8 238.1 10 /8 269.9 8 /4 222.3 10 /8 269.9 9 /8 238.1 10 /8 269.9 9 /8 238.1 10 254.0 10 111/ 3 3 3 1 3 1 4 285.8 12 /4 323.9 10 /4 273.1 12 /4 323.9 11 /4 285.8 12 /4 323.9 11 /4 285.8 12 304.8 12 131/ 1 1 1 2 342.9 15 381.0 13 330.2 15 381.0 13 /2 342.9 15 381.0 13 /2 342.9 l4 /4 362.0 14 143/ 1 3 1 3 1 4 374.7 16 /4 412.8 � � � � 14 /4 374.7 16 /4 412.8 14 /4 374.7 15 /2 393.7 16 17 425.5 181/ 1 3 5 2 469.9 � � � � 17 425.5 18 /2 469.9 16 /4 425.5 17 /8 447.7 18 191/ 1 1 1 4 489.0 21 533.4 � � � � 19 /4 489.0 21 533.4 19 /4 489.0 20 /8 511.2 20 21 533.4 23 584.2 � � � � 21 533.4 23 584.2 21 533.4 22 558.2 24 251/ 1 1 1 1 1 4 641.4 27 /4 692.2 � � � � 25 /4 641.4 27 /4 692.2 25 /4 641.4 26 /4 666.8 DIMENSIONS IN INCHES & mm. NOTE: Style R3 for NPS 1/ 1 4 are for class 150 to 600 only. Style R3 for NPS 4 /2 are for class 150 to 1500 only. 23
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