A mechanical face seal is an integral component used in various types of machinery and equipment to prevent leakage of fluids and protect against contamination ingress. These seals are designed to maintain contact between two faces, one rotating with the shaft and the other stationary with the housing, thereby creating a barrier that controls fluid transfer.

The letter repeated messages heard from Trump and other GOP leaders during the election campaign around illegal immigrant criminals and perceived threats to communities across the country from "open border" policies.

FeaturesType DO Mechanical Face SealsRing MaterialHardened steel or cast ironElastomerNBR, FKM, HNBRAssemblyAxial preload necessaryLoadSuitable for high loadSpeedTolerates high speed

Other concerns include the separation of families and negative impacts on local and national economies if workers are deported.

Clear battle lines are being drawn between Republican and Democrat-led states when it comes to implementing President-elect Donald Trump's sweeping immigration plans, especially mass deportations.

The effectiveness of a mechanical face seal relies heavily on its ability to maintain a thin film of lubricant between the sealing faces, even under varying pressures and temperatures. This lubricating layer minimizes friction and wear while enhancing seal performance. Without adequate sealing provided by mechanical face seals, industrial and automotive sectors would struggle with frequent maintenance issues and reduced operational reliability.

Containment: They keep fluids (liquids or gases) within the system contained, preventing leaks that could lead to environmental contamination, safety hazards, or loss of valuable process media. Protection: Face seals safeguard internal components from external contaminants such as dust particles, water, or any abrasive materials that might compromise system integrity. Life Extension: The use of face seals extends the lifespan of machinery by reducing wear and tear on components due to exposure to hostile environments or corrosive substances. Efficiency Maintenance: By ensuring tight sealing, these seals help maintain the efficiency of hydraulic systems and pumps by preventing pressure drop which can have significant impacts on performance.

At the local level, it gets more complicated. New York City Mayor Eric Adams gave a somewhat mixed message at a press conference Thursday after meeting with incoming border czar Tom Homan. He said the city would continue to protect long-term residents and migrants, while also look to use executive action to remove those protections for criminals.

"I will not tolerate misguided policies that don't actually help with the critical work that's happening here, that you're seeing here today, that actually keeps our communities safe and secure," Arizona Governor Katie Hobbs said during a recent press conference. "I will not tolerate terrorizing communities or threatening Arizonans."

In contrast, multiple Democrat-run states have said they will not offer local law enforcement or other state resources to assist with the plans, including Illinois, New York, New Mexico, and Pennsylvania.

This week, 26 GOP governors signed a joint letter stating they "stand united in support" of his plans to protect American citizens from "disastrous open border policies".

They said they would use every tool at their disposal to aid in the effort to remove illegal immigrants, including local law enforcement and the National Guard.

"We are proud to welcome President Trump back to the White House, a leader who has consistently put America first," the letter read. "His leadership is exactly what our nation needs to restore law and order at the border, and we are eager to work alongside his Administration to tackle the critical challenges facing our nation."

Mechanical face seals stand as a critical component in the realm of engineering, designed to maintain system integrity and ensure the flawless operation of machinery across various industries. These precision devices are pivotal in preventing fluid leaks and controlling environmental contamination. The intricate design of mechanical face seals allows them to withstand extreme pressures and temperatures, while tackling the challenges posed by dynamic operating conditions.

"We are a city of immigrants, and we will always be true to those roots, but we also have to be honest and be clear that our immigration system is broken and a small number of repeat, violent offenders are taking advantage of that broken system," Adams said.

In the sanctuary city of New York, Adams said Thursday that he needed federal funding to refill city coffers after spending some $6.65 billion since early 2022 on supporting new arrivals. He also called for bipartisan agreement on increasing border security, protecting Dreamers and a modernization of the country's immigration system.

By contrast, Democratic governors and mayors have promised to protect undocumented migrants in their communities, using sanctuary laws that have prevented local officials and law enforcement from assisting Immigration and Customs Enforcement (ICE).

While some have been extremely vocal about border security during President Joe Biden's term, such as Abbott, whose state sits on the U.S.-Mexico border, others have been relatively quiet on the issue until now.

All but one GOP governor – Vermont's Phil Scott – signed the letter declaring support for Trump's plans earlier this week.

These integral components serve critical roles in ensuring stability and longevity of machinery while optimizing operational efficiency by reducing maintenance requirements and preventing costly downtime due to leaks or failures.

Dan Gooding is a Newsweek reporter based in New York City. His focus is reporting on immigration and border security. He has covered immigration issues extensively, including the root causes of migration to the U.S., its impact on border communities and responses around the country. Dan joined Newsweek in 2024 from The Independent and previously worked at The Messenger, Business Insider and in U.K. local radio. He is a graduate of De Montfort University in Leicester, UK. You can get in touch with Dan by emailing d.gooding@newsweek.com. You can find him on X @DanGooding. Languages: English.

Type DF Mechanical Face Seals, on the other hand, are designed for applications where there are extreme misalignments or deflections in the operational machinery. They have built-in capabilities to compensate for such inconsistencies ensuring a tight seal throughout their use. DF seals incorporate two metallic seal rings that interface with an angled face profile instead of being parallel as seen in Type DO.

Their performance relies heavily on material selection for both the stationary and rotary rings—common materials range from carbides to ceramic or metallic options depending on service conditions such as temperature extremes, corrosive media exposure, and anticipated wear rates. Advanced surface technology might also be applied to enhance durability and reduce friction coefficients.

IndustryApplicationFunctionConstruction & MiningExcavators, BulldozersResist abrasives; maintain axle & gearbox integrityAgricultureTractors, HarvestersPreserve internal cleanliness; maintain lubricationIndustrialConveyors, Mixers, PumpsPrevent leaks; sustain pressureAutomotiveHeavy Trucks (Wheel Hubs), Final DrivesProvide durability under variable conditionsMarinePropulsion SystemsCounteract seawater corrosionEnergy ProductionWind Turbines, Hydroelectric PlantsProtect shafts from environmental exposure

Selecting between these two types rests on understanding the exact requirements of your application regarding alignment tolerances, media exposure, pressure constraints, temperature ranges, and rotational speeds. Both types strive to minimize leakage and enhance operational lifespan whilst operating under given specifics their designs are intended for.

Type DO Mechanical Face Seals are typically used in conditions where there is aggressive media in the environment, or where there are high loads and speeds involved. The structure of DO seals includes a metal ring that serves as the rotating element, and an elastomeric ring which provides the static sealing. This combination ensures robust performance even under harsh conditions.

Even in states that overall have shown support for Trump's plans, some lawmakers such as Kentucky Senator Rand Paul, have raised concerns about the potential wide-sweeping approach rather than a more targeted program to remove migrant criminals.

Dan Gooding is a Newsweek reporter based in New York City. His focus is reporting on immigration and border security. ... Read more

"When the Biden Administration refused to secure our borders and uphold the rule of law, it was Republican governors who took action," the letter read. "We mobilized state resources, including law enforcement and National Guard units, to protect Americans from disastrous open border policies and prevent illegal immigration from overwhelming our country."

Mechanical face seals, integral components for maintaining integrity in rotating equipment, come primarily in two distinct types: Type DO and Type DF. Each one is crafted with specific design features to cater to a variety of working conditions and applications.

Newsweek reached out to the governors' offices in the nine states where the situation remained unclear as of Friday morning.

Many of the governors and city mayors signaling they plan to stand against the plans have voiced concerns over the logistics of such an operation, which will seek to target at least 11 million undocumented migrants.

FeaturesType DF Mechanical Face SealsCompensation CapabilityHigh tolerance for misalignmentsRing MaterialStandard options similar to Type DOElastomerDesigns utilising various elastomersAssemblySelf-aligning with angular displacementApplicationIdeal for oscillating movements

In conclusion, mechanical face seals are essential components in a myriad of industrial applications where reliability, efficiency, and the integrity of sealing systems against fluids and contaminants are critical. Our in-depth understanding of seal design, material compatibility, and application-specific requirements enables us to offer tailored solutions that maximize performance and longevity. We encourage you to leverage our expertise to enhance your operations. Visit our website for detailed information on our products and services or contact us directly to discuss how we can meet your unique needs with precision-engineered sealing solutions. Your success is sealed with our commitment to quality and innovation.

Kay Ivey (Alabama), Mike Dunleavy (Alaska), Sarah Sanders (Arkansas), Ron DeSantis (Florida), Brian Kemp (Georgia), Brad Little (Idaho), Eric Holcomb (Indiana), Kim Reynolds (Iowa), Jeff Landry (Louisiana), Tate Reeves (Mississippi), Mike Parson (Missouri), Greg Gianforte (Montana), Jim Pillen (Nebraska), Joe Lombardo (Nevada), Chris Sununu (New Hampshire), Doug Burgum (North Dakota), Kevin Stitt (Oklahoma), Mike DeWine (Ohio), Henry McMaster (South Carolina), Kristi Noem (South Dakota), Bill Lee (Tennessee), Greg Abbott (Texas), Spencer Cox (Utah), Glenn Youngkin (Virginia), Jim Justice (West Virginia), and Mark Gordon (Wyoming).

The function of these mechanical face seals is to retain lubricants, exclude contaminants, and maintain pressure differentials between internal components and their surrounding environment. A consistent operating condition is maintained by balancing the heat generation because of friction at the seal faces with appropriate cooling methods.

Mechanical face seals are precision-engineered devices designed to provide a leak-proof sealing solution in rotating equipment, such as pumps and compressors. They consist of two annular, flat-faced rotating rings that are pressed against each other through spring force and fluid pressure to create a tight seal. The primary components include a pair of rings with precisely machined sealing faces—one rotating with the shaft and the other fixed to the housing—and various secondary components like springs, O-rings, or bellows that apply the necessary preload force to maintain contact between the seal faces.

"Republican governors remain fully committed to supporting the Trump Administration's efforts to deport dangerous criminals, gang members, and terrorists who are in this country illegally. We understand the direct threat these criminal illegal immigrants pose to public safety and our national security, and we will do everything in our power to assist in removing them from our communities," the governors wrote.