Chesterton 329 Stern-Lon Flax Marine Packing

Chesterton 329 Stern-Lon Marine Flax Packing
Flexible & Formable


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Chesterton 329 Stern-Lon®​ is square-plait-braided to provide an unusually flexible, formable packing. The base fiber is a long-fibered, roved flax of the highest quality. 329 is graphite-free to avoid galvanic corrosion on shafts. ​ 

During production, 329 is first impregnated with concentrated PTFE dispersion to promote non-flowing lubricity and to retard degradation. This is followed with a plasticizing "break-in" lubricant which assures compressibility, flexibility, and good packing-to-shaft contact. Large sizes need not be hammered into place. Finally, to minimize frictional attrition, a finely divided fluorocarbon powder is embedded into the surface of the packing.  Chesterton 329 produces little or no shaft or sleeve wear.​​

Suitable for stern tube and paper mill packing
Most recognized product for the marine industry in Stern tubes
​Stern tubes
Hot phosphoric acid
Rudder posts
Shaft bulkhead gl​​​​ands
Cold water
Pulp & Paper:

​Temperature Limit 135° C (275° F)
Pressure Limit 20 bar g (300 psig)
​Shaft Speed 5 m/s (1000 fpm) ​​
Chemical Resistance pH 6 to 8



Product Datasheet: Chesterton 329 (English) Datasheet: Chesterton 329 (English)pdf
Installation Instructions: 370 (English) Instructions: 370 (English)pdf
SDS: 329 (English) 329 (English)pdf
Installation Instructions: 329 (English) Instructions: 329 (English)pdf
SDS: 329 (Deutsch) 329 (Deutsch)pdf