triangular back-up ring for piston applications, fits in special shaped housings (see seal data sheets). also used as integrated active back-up ring in special high pressure or low friction seal profiles. split and non split design available.


not bolded symbols; please consult our technical for application limitations

category of profile

machined only.

operating parameters & material

material temperature
POM -50 °C … +100 °C
PA -40 °C … +100 °C
PTFE glass -200 °C … +260 °C

the stated operation conditions represent general indications. it is recommended not to use all maximum values simultaneously. surface speed limits apply only to the presence of adequate lubrication film.

2 POM up to ø260 mm, PA above ø260 mm

seal & housing recommendations

please note that we are able to produce those profiles to your specific need or any non standard housing. for detail measurements, please see Jet seal pars catalog…

tolerance value and surface finish according to corresponding seal data sheet

don’t hesitate to contact our technical department for further information or for special requirements (temperature, speed etc.), so that suitable materi- als and/or designs can be recommended.