350250037-R21, Neutral, Radial shaft seal
Seal, Rubber (Metal reinforced), Nitrile rubber (NBR), Single lip, 63.5, 88.9, 9.525, 2.5, 3.5, 0.375
60028, SKF, Radial shaft seal with double metal case, SKF Wave lip and auxiliary, non-contacting lip
Radial shaft seal, Double Metal-cased, Nitrile rubber (NBR), Double lip, 152.4, 190.5, 12.7, 12.7, EAN code:85311038836
85X100X12-R23, Neutral, Radial shaft seal
Seal, Rubber (Metal reinforced), Nitrile rubber (NBR), Double lip, 85, 100, 12
85X105X10 CRW1 V, SKF, Radial shaft seal with metal case and SKF Wave lip
Radial shaft seal, Metal-cased, Fluoro rubber (FKM), Single lip, 85, 105, 10, 10, EAN code:85311031608
70080, SKF, Radial shaft seal with metal case, SKF Wave lip and auxiliary, contacting lip
Radial shaft seal, Metal-cased, Nitrile rubber (NBR), Double lip, 177.8, 215.9, 12.7, 12.7, EAN code:85311039550
120X150X12 CRW1 R, SKF, Radial shaft seal with metal case and SKF Wave lip
Radial shaft seal, Metal-cased, Nitrile rubber (NBR), Single lip, 120, 150, 12, 12, EAN code:85311036535
120X150X12 HMS5 RG, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Nitrile rubber (NBR), Single lip, 120, 150, 12, 12, EAN code:07316572553459
120X150X12 HMS5 V, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Fluoro rubber (FKM), Single lip, 120, 150, 12, 12, EAN code:07316572547458
120X160X12 HMSA10 V, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Fluoro rubber (FKM), Double lip, 120, 160, 12, 12, EAN code:07316572547557
12438, SKF, Radial shaft seal with metal case, SKF Wave lip and auxiliary, contacting lip
Radial shaft seal, Metal-cased, Fluoro rubber (FKM), Double lip, 31.75, 50.77, 11.13, 11.13, EAN code:85311011228
100X130X12 CRW1 R, SKF, Radial shaft seal with metal case and SKF Wave lip
Radial shaft seal, Metal-cased, Nitrile rubber (NBR), Single lip, 100, 130, 12, 12, EAN code:85311034074
150X180X12 HMSA10 V, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Fluoro rubber (FKM), Double lip, 150, 180, 12, 12, EAN code:07316572547731
150X180X15 HMSA10 V, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Fluoro rubber (FKM), Double lip, 150, 180, 15, 15, EAN code:07316572035399
115X140X12 CRW1 V, SKF, Radial shaft seal with metal case and SKF Wave lip
Radial shaft seal, Metal-cased, Fluoro rubber (FKM), Single lip, 115, 140, 12, 12, EAN code:85311036238
19834, SKF, Radial shaft seal with metal case and single sealing lip, for grease
Radial shaft seal, Metal-cased, Nitrile rubber (NBR), 50.8, 69.85, 6.35, 6.35, EAN code:85311022330
19852, SKF, Radial shaft seal with metal case and SKF Wave lip
Radial shaft seal, Metal-cased, Nitrile rubber (NBR), Single lip, 50.8, 65.07, 8.51, 8.51, EAN code:85311022408
170X200X15 HMS5 RG, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Nitrile rubber (NBR), Single lip, 170, 200, 15, 15, EAN code:07316572035405
17X40X7 HMS5 RG, SKF, Radial shaft seal with rubber outside diameter and single sealing lip
Radial shaft seal, Rubber (Metal reinforced), Nitrile rubber (NBR), Single lip, 17, 40, 7, 7, EAN code:07316572269756
140X170X12 HMSA10RG, SKF, Radial shaft seal
Seal, Rubber (Metal reinforced), Nitrile rubber (NBR), Double lip, 140, 170, 12, 12, EAN code:ERROR: #N/A
16245, SKF, Radial shaft seal with metal case and SKF Wave lip
Radial shaft seal, Metal-cased, Nitrile rubber (NBR), Single lip, 41.28, 63.55, 7.95, 7.95, EAN code:85311016902
Radial shaft seals
Radial shaft seals are used between rotating and stationary machine components or between two components in relative motion and consist of two main parts:
- A cylindrical outer covering of sheet steel (case) or an elastomer that has the requisite interference fit to seal statically against the housing bore.
- A sealing lip made of an elastomeric or thermoplastic material that seals dynamically and statically against the shaft. The lip has a sealing edge that is formed by moulding, cutting or grinding. It is normally pressed against the counterface surface of the shaft, with a defined radial load, by a garter spring. The edge of the sealing lip and the shaft counterface surface form the most important functional area of a radial shaft seal. The sealing effect of the lip can be enhanced by designing the contact area of the lip with hydrodynamic features.
Some radial shaft seal designs have an auxiliary lip that protects the primary sealing lip from dust and other contaminants. A suitable lubricant in the space between the primary sealing lip and the auxiliary lip can reduce wear and delay corrosion. Contaminants that have passed the auxiliary lip will eventually cause damage in the counterface surface area. A build-up of heat can also occur between the two lips, resulting in premature wear.
Radial shaft seals are used in a multitude of applications. Because of the importance of radial shaft seals for the operational reliability and service life of machines and equipment, both seal manufacturers and users are equally interested, to some degree, in standardization. These cover boundary dimensions, tolerances, material specifications, test methods and terminology as well as the basic outside diameter constructions and sealing lip arrangements.
The terminology used in this chapter is listed for metal-cased seal and for rubber outside diameter seal.
Maintenance:
- Regularly inspect seals for signs of wear or damage.
- Ensure proper installation to avoid leaks and premature failure.
- Replace seals as part of routine maintenance to maintain system performance.