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R – Series Gaskets

r

Description:

The R-Type ring gasket can be ordered to two different profiles, oval or octagonal in cross-sections. Both types have identical pitch diameter as the flange groove they correspond to. These gaskets are used in pressures up to 5,000 PSI. The octagonal type has a higher sealing coeffient than the oval, therefore being the better gasket of the two. The oval type is the only gasket that will fit a bottom radiused groove. Flanges with flat bottom v-grooves will accept either style. Gaskets that have been torqued initiating a metal-to-metal seal should be discarded and not reused.

Pressure Class Ratings

Wolar R-Gaskets For API 6B Flanges

 1503/6009001500250020003000500010000
R-11 1/2       
R-12  1/21/2     
R-13 3/4  1/2    
R-14  3/43/4     
R-151        
R-16 1113/4    
R-171 1/4        
R-18 1 1/41 1/41 1/41    
R-191 1/2        
R-20 1 1/21 1/21 1/2 1 1/21 1/21 1/2 
 1503/6009001500250020003000500010000
R-21    1 1/4    
R-222        
R-23 2  1 1/22   
R-24  22  22 
R-252 1/2        
R-26 2 1/2  22 1/2   
R-27  2 1/22 1/2  2 1/22 1/2 
R-28    2 1/2    
R-293        
R-30 3       
 1503/6009001500250020003000500010000
R-31 33  33  
R-32    3    
R-333 1/2        
R-34 3 1/2       
R-35   3   3 
R-364        
R-37 44  44  
R-38    4    
R-39   4   4 
R-405