SDR 7 BACKUP RINGS 
Fusion Bonded Epoxy Coated Ductile Iron
ASTM A536 Materials Standard
Made according to ANSI B16.5 Class 150
Size range from 2″ IPS to 24″
Green Epoxy Coating on SDR 7 IPS Backup Rings
SDR 7 BACKUP RINGS
SDR 11 BACKUP RINGS
Fusion Bonded Epoxy Coated Ductile Iron
ASTM A536 Materials Standard
Made according to ANSI B16.5 Class 150
Size range from 2″ IPS to 36″
Red Epoxy Coating on IPS SDR 11 Backup Rings
DIPS SDR 11 BACKUP RINGS
Fusion Bonded Epoxy Coated Ductile Iron
ASTM A536 Materials Standard
Made according to ANSI B16.5 Class 150
Size range from 4″ DIPS to 12″ DIPS in stock
Light Blue Epoxy Coating on DIPS SDR 11 Backup Rings
STAINLESS STEEL BACKUP RINGS
Size range from 2″ IPS to 24″ IPS and 4″ DIPS to 12″ DIPS in stock
316 Stainless Steel in SDR 11 & SDR 7
ASTM A351CF8M
Made according to ANSI B16.5 Class 150
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