Housing Bore	3.08 Inch / 78.232 M
Case Construction	Steel
Other Features	Bore-Tite on OD / Wi
Spring Loaded	Yes
Generic Design Code	C_R_HMSA25
Inch - Metric	Inch
Noun	Seal
Seal Design Code	HMSA25
Lip Material	Nitrile
Lip Retainer	Carbon Steel Garter
Harmonized Tariff Code	4016.93.50.20
Solid or Split Seal	Solid
Weight / LBS	0.094
Long Description	1.705 Shaft Dia
Weight / Kilogram	0.043
Manufacturer Name	SKF
Keyword String	Lip
Category	Oil Seals
Manufacturer Item Number	17005
Type of Seal	Oil Seal

MS27595-144 B 64.21X68.58X1.4 PTFE Backup RingsPTFE Backup	Noun:Seal; Nominal Width:0.625 Inch / 15.875; Housing Bore:11.438 Inch / 290.52; Manufacturer Item Number:1019110; Category:Oil Seals; Weight / LBS:4.163; Solid or Split Seal:Solid; Lip Retainer:Stainless Steel Gart; Manufacturer Name:SKF; Seal Design Code:HDS1; Generic Design Code:C_R_HDS1; Keyword
9258-246.084 B 64.4X70X1.4 PTFE Backup RingsPTFE Backup	Tool Type:Seal Drive Plate; Weight:2.10 lbs;
PTFE BACKUP RING B 64.5X70.5X2 PTFE Backup RingsPTFE Backup	Spring Loaded:Yes; Lip Material:Nitrile; Actual Width:0.374 Inch / 9.5 Mil; Keyword String:Lip; Generic Design Code:C_R_CRSHA1; Manufacturer Name:SKF; Weight / LBS:0.097; Harmonized Tariff Code:4016.93.50.20; Weight / Kilogram:0.044; Nominal Width:0.374 Inch / 9.5 Mil; Category:Oil Seals; Shaft Diam
OTBUQ260797 STEP CUT B 64.51X77.47X5.58 PTFE Backup RingsPTFE Backup	Seal Design Code:HDSA2; Manufacturer Item Number:1700142; Lip Retainer:Stainless Steel Gart; Actual Width:0.875 Inch / 22.225; Category:Oil Seals; Case Construction:Steel; Weight / LBS:7.071; Lip Material:Nitrile; Harmonized Tariff Code:4016.93.50.20; Generic Design Code:C_R_HDSA2; Other Features:La
MS27595-230 B 64.06X70.05X1.27 PTFE Backup RingsPTFE Backup	Long Description:13 Shaft Dia; Harmonized Tariff Code:4016.93.50.20; Case Construction:Rubber; Lip Material:Nitrile; Category:Oil Seals; Seal Design Code:HS7; Nominal Width:0.813 Inch / 20.65 M; Spring Loaded:Yes; Weight / Kilogram:1.435; Manufacturer Name:SKF; Lip Retainer:Stainless Steel Gart; Sol
B 64.7X71X1.7 B 64.7X71X1.7 PTFE Backup RingsPTFE Backup	Category:Unclassified; Weight / Kilogram:0.1; Manufacturer Name:SKF; Product Group:S02234;
KY64BR B 64X80X3 PTFE Backup RingsPTFE Backup	Product Group:B04334; Category:Roller s; Weight / Kilogram:0.591; Manufacturer Name:SKF;
SUN-4BG60 PTFE B 65X67.5X2.4 PTFE Backup RingsPTFE Backup	Product Group:B04334; Category:Roller s; Manufacturer Name:SKF; Weight / Kilogram:1.375;

Backup Rings

A backup ring is a ring of hard, extrusion resistant material such as high-durometer Nitrile, Viton® (FKM), or PTFE. A backup ring is designed to fit between ...

back-up rings - PTFE Competence Center

Back-up rings are manufactured from extrusion resistant material as protection and support elements, normally with a rectangular cross-section.

Backup Rings - PTFE - Freudenberg Sealing Technologies

The PTFE backup rings offer extrusion resistance to a paired o-ring to increase pressure handling capabilities. Find out more about this product and more.

Things to Know about PTFE Backup Rings and Applications

Jul 17, 2014 — PTFE backup rings make the usage of o-rings for static and dynamic applications in hydraulic and pneumatic systems more efficient.

Backup O-Rings - PTFE Rings - Hallite - Hallite Seals

Hallite PME back-up rings are uncut back-up rings made from specific conditioned PTFE to be assembled into one-piece external grooves.

401324 INCA B 54X60X1.6 PTFE Backup RingsPTFE Backup Video

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401324 INCA B 54X60X1.6 PTFE Backup RingsPTFE Backup MODELS

401324 INCA B 54X60X1.6 PTFE Backup RingsPTFE Backup

401324 INCA B 54X60X1.6 PTFE Backup RingsPTFE Backup SPECIFICATIONS

401324 INCA B 54X60X1.6 PTFE Backup RingsPTFE Backup Systems

401324 INCA B 54X60X1.6 PTFE Backup RingsPTFE Backup Technology