Product Series
7800 Series CEMA
316 stainless sanitary rotary seal for FDA / USDA service.
All-stainless, washdown-rated seal for food, dairy, and pharma equipment.
- Temperature
- −40 °F to 350 °F
- Pressure
- −5 to 25 psig
- Shaft sizes
- 1.000" – 6.000" (25 – 150 mm)
- Series ID
- 7800
The 7800 CEMA is what we build when the inspector is on the floor. Every wetted surface is 316L stainless, polished to 32 Ra or finer; every elastomer is FDA-compliant; every weld is full-penetration and crevice-free. It's drop-in compatible with CEMA stuffing-box patterns on sanitary screw conveyors, ribbon blenders, and direct-contact food handling.
02Specifications
The numbers behind the build.
Every spec on this page reflects what we ship from Cherry Hill — not a marketing ceiling. Need a number outside this envelope? Send us the application; we quote custom.
| Spec | Value |
|---|---|
| Temperature range | −40 °F to 350 °F (−40 °C to 177 °C) — CIP/SIP rated |
| Pressure range | −5 to 25 psig |
| Shaft sizes | 1.000" – 6.000" (25 – 150 mm) |
| Materials | 316L stainless housing & faceplate, Ra ≤ 32 µin polish, FDA-compliant FKM/EPDM |
| Mounting | CEMA-pattern bolt-on flange; sanitary-rated weld-prep on request |
| Certifications | FDA 21 CFR §177.2600 · USDA accepted · 3-A standard 13-12 conformant |
| Air purge | 1 – 3 SCFH instrument-quality air; sterile air option for pharma |
| Design life | 3+ years typical in 24/7 food production with daily CIP |
04Equipment & applications
Drop-in compatible with these.
05Engineering FAQ
Questions our application engineers actually get.
06Related series
Often considered alongside the 7800.
7500 Series
Workhorse seal for screw conveyors, mixers, and dry bulk handling.
View specsSeries 97009700 Series
When the process is mean — strong acids, hot brine, abrasive slurries.
View specsSeries CHOPChopper Seal
Engineered for the 3,600 RPM chopper, not adapted from a slow-speed seal.
View specs7800 · sized in 24 hours
Get the 7800 sized for your equipment.
Send shaft size, temperature, pressure, and the media you handle. We respond with a sized 7800 Series CEMA recommendation, materials, and pricing — typically within one business day.