| 50OD Backing Ring Nylon Coated | SFBR50N |
| 63OD Backing Ring Nylon Coated | SFBR63N |
| 75OD Backing Ring Nylon Coated | SFBR75N |
| 90OD Backing Ring Nylon Coated | SFBR90N |
| 110OD Backing Ring Nylon Coated | SFBR110N |
| 125OD Backing Ring Nylon Coated | SFBR125N |
| 160OD Backing Ring Nylon Coated | SFBR160N |
| 180OD Backing Ring Nylon Coated | SFBR180N |
| 225OD Backing Ring Nylon Coated | SFBR225N |
| 250OD Backing Ring Nylon Coated | SFBR250N |
| 280OD Backing Ring Nylon Coated TD | SFBR280D |
| 280OD Backing Ring Nylon Coated TE | SFBR280E |
| 315OD Backing Ring Nylon Coated | SFBR315N |
| 400OD Backing Ring Nylon Coated | SFBR400N |
