Match pump seal dimensions and materials accurately with the U.S. Seal PS-185. This general-service Type C mechanical seal is sized for a 1-1/4 in shaft and combines a carbon primary ring, ceramic cup-mounted mating ring, Buna elastomers and stainless steel hardware. Its 1.937 in seal-head OD, 1.875 in mating-ring OD/bore and 0.437 in mating-ring thickness make it a practical replacement option across a broad range of verified pump OEM cross-references.
U.S. Seal PS-185 is a general-service mechanical pump seal for 1-1/4 in shafts. The Type C seal head uses a carbon primary ring, ceramic cup-mounted mating ring, Buna elastomers, and stainless steel metal parts and spring for pump and rotating-equipment sealing applications.
Specs: 1.250 in shaft/seal size; Type C head; 1.937 in seal head OD; 1.062 in seal head operating height; Figure 1 cup-mounted mating ring; 1.875 in mating ring OD/bore; 0.437 in mating ring thickness; material code BCFJF; UPC 852661157063; weight 0.25 lb; Type C configuration equivalent to John Crane Type 21 style.
| Elastomers Material | : | Buna |
| Head Type | : | C |
| Inside Diameter | : | 1.250 in |
| Mating Ring Design | : | Cup Mounted |
| Mating Ring Material | : | Ceramic |
| Mating Ring Outside Diameter | : | 1.875 in |
| Mating Ring Thickness | : | 0.437 in |
| Metal Parts Material | : | Stainless Steel |
| Primary Ring Material | : | Carbon |
| Seal Head Outside Diameter | : | 1.937 in |
| Series | : | PS |
| Spring Material | : | Stainless Steel |
| Type | : | General Service Seal |
- 1.250 in shaft/seal size for pump and rotating-equipment service
- Type C seal head with 1.937 in outside diameter and 1.062 in operating height
- Figure 1 cup-mounted mating ring with 1.875 in OD/bore and 0.437 in thickness
- BCFJF material combination with Buna elastomer, carbon primary ring and ceramic mating ring
- Stainless steel metal parts and stainless steel spring
- Type C configuration is equivalent to John Crane Type 21 style
- UPC 852661157063; product weight 0.25 lb
