Comparison list concerning radial shaft seals

Radial shaft seals / Basic structure

radial shaft seal components

Comparison list concerning radial shaft seals

Manufacturer Designation Kugellager-Express Designation
BA BASL B1 B1SL B2 B2SL
BS (TR) A (TR) E (TR) C (TR) D TR) B (TR) F
Chicago Rawhide HMS4 HMSA7 CRW1 CRWA1 CRWH1 CRWHA1
Dichma WA WAS WB WBS WC WCS
Dichta A AS B BS C CS
Dichtomatik WA WAS WB WBS WC WCS
DIN 3760 A AS B BS C CS
Ebele R RP B1 B1SL B2 B2SL
Elring A AS B BS C CS
ERIKS R RST M MST GV GVST
Forstefa CB CC BB BC DB DC
Freudenberg BA BASL B1 B1SL B2 B2SL
Gaco A FA ABI – – –
Garlock 92 94 71,91 76 68 –
Götze 827N 827S 822N 822S 824N 824S
HAG A AS B BS C CS
Höffert A AS B BS C CS
KACO DG DGS DF DFS DFK DFSK
Krompp CB CC BB BC DB DC
NAK SC TC VC1 SB SA TA
National 35 32 48 47 45 41
NOK SC TC VC1 SB SA TA
Paulstra IE IEL EE EEL EEP –
Pioneer Westen R21 R23 R4 R6 R1 –
Racks A AS B BS C CS
Ringseal A AS B BS C CS
Simmerwerke A ASL B BSL C CSL
Simrit BA BASL B1 B1SL B2 B2SL
SKF HMS4 HMSA7 CRW1 CRWA1 CRWH1 CRWHA1
Stefa CB CC BB BC DB DC
Teiwan SC TC SB TB SA TA
Style SC TC VC1 SB SA TA
Ullmann A B C D E F

All indications were made carefully and verified. Kugellager-Express GmbH doesn´t assume any liability for incomplete or false indications.

If required, we can also offer radial shaft seals of the brands Freudenberg, Simrit, SKF, KACO and Erling to you apart from our radial shaft seals available in our online-shop. If required, please send us your enquiry via our contact form.

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Information

Design Properties
BA
  • has a seal lip
  • can be used for the most different applications
  • seals up to a pressure of circa 0,5 bar, keeps unpressurized oil in a housing, for instance
  • completely manufactured of rubber from NBR-Elastomt
  • vulcanized stiffening ring made of metal
  • the mainspring presses the seal lip against the shaft
BASL
  • with protective lip (SL))
  • for specifications see "radial shaft seal BA"
B1
  • metal-design of the radial shaft seal BA
  • open metal-ring, not vulcanized
  • the sealing effect at the outer ring is not so high compared to type BA, it has therefore to be fitted with sealant if necessary
  • with steel-spring
B2
  • solid design of the radial shaft seal BA
  • metal seal, closed on both sidesn
  • high load carrying capacity, also in case of rough assembly in cramped conditions
  • with spring

Material

Material Description of material
according to ASTM 1418
(ISO 1629)		 Properties Temperature resistance
Fluorcarbon (Viton®) FKM (FPM)
  • extremely high chemical and thermical resistance
 -30° to +180°C
Polyacrylat ACM
  • more suitable in the chemical and thermal respect compared to NBR
  • suitable against oils with aggressive additives
 -20° to +130°C
Silikon VMQ
  • suitable for low temperatures
  • bad mechanical properties
 -50° to +150°C
Polytetrafluorethylen (Teflon®) PTFE
  • excellent chemical resistancet
  • low coefficient of friction
  • not very elastic
  • dynamic applications
 -80° to +200°C
Hydriertes Acrylnitril-Butadien HNBR
  • suitable for use with biodegradable oil
 -40° to +130°C

Storage

  • at 5 to 25 °C; in a darkened room
  • storable up to circa 70% humidity
  • NBR-material:
    (BA, BASL, B1, B2, BAOF):
    maximum durability: 5 to 6 years
  • FPM / FKM (VIT), material:
    durability 9 to 10 years

Ozone – which is produced by laser-printers, electrical engines or certain lamps – is particularly harmful to the radial shaft seals. Particular attention has also to be paid to the storage on metal plates, cyclical chemical processes can develop in this case and damage the radial shaft seal. It would be best if you stored the radial shaft seals in the original packaging and make quickly use of it.