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Home Retired NASA astronaut Col. William “Bill” McArthur, along with NASA and Northrop Grumman personnel, view a test splice of the material used for an elastomer sealing at Parker Hannifin Corp., in Lexington, Kentucky, Sept. 18. Parker Hannifin’s O-ring and Engineered Seals Division provides elastomer sealing that is a key component for NASA’s Space Launch System rocket boosters. (NASA) Retired NASA astronaut Col. William “Bill” McArthur, along with NASA and Northrop Grumman personnel, view a test splice of the material used for an elastomer sealing at Parker Hannifin Corp., in Lexington, Kentucky, Sept. 18. Parker Hannifin’s O-ring and Engineered Seals Division provides elastomer sealing that is a key component for NASA’s Space Launch System rocket boosters. (NASA)

Retired NASA astronaut Col. William “Bill” McArthur, along with NASA and Northrop Grumman personnel, view a test splice of the material used for an elastomer sealing at Parker Hannifin Corp., in Lexington, Kentucky, Sept. 18. Parker Hannifin’s O-ring and Engineered Seals Division provides elastomer sealing that is a key component for NASA’s Space Launch System rocket boosters. (NASA)

Retired NASA astronaut Col. William “Bill” McArthur, along with NASA and Northrop Grumman personnel, view a test splice of the material used for an elastomer sealing at Parker Hannifin Corp., in Lexington, Kentucky, Sept. 18. Parker Hannifin’s O-ring and Engineered Seals Division provides elastomer sealing that is a key component for NASA’s Space Launch System rocket boosters. (NASA)

Retired NASA astronaut Col. William “Bill” McArthur, along with NASA and Northrop Grumman personnel, view a test splice of the material used for an elastomer sealing at Parker Hannifin Corp., in Lexington, Kentucky, Sept. 18. Parker Hannifin’s O-ring and Engineered Seals Division provides elastomer sealing that is a key component for NASA’s Space Launch System rocket boosters. (NASA)

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