Low Emission Packing M641

M641 graphite packing is a low-emission packing specially designed for quarter-stroke valves (like ball valves). The graphite packing complies with  API-622, ISO15848, TA-LUFT and other fugitive  emission control standards. 

Structure: The middle part of the seal ring uses a high-purity molded flat graphite ring structure, and the end ring uses M602 molded packing.
Temperature: -200℃ to +450℃ (in air)
                      +450°C (in steam)
PH range: 0~14 (except strong oxidants)
Pressure: up to 4.500PSI (310bar)

Pass the fugitive emission test:
ISO15848-1 (400℃)
API-622 (Second Edition)
TA-LUFT 
 

Fugitive Emission test in the API641

API-641	Average leakage	Max leakage	Number of bolt adjustment
Fugitive Emission Test	4 PPMV	15.9 PPMV	0

The measured data of M641 graphite packing in ISO15848-1 (400℃)



The measured data of M641 graphite packing in API641, the maximum leakage is 18PPM 



All of our graphite packing can provide free samples to customers for testing.
At the same time, we can also provide you with technical support and testing services. We sincerely hope that our cooperation can bring a win-win situation.